CLASS 7 - Foundationictfoundation.org/images/publication/class7.pdf · 1 CLASS 7 The Class 7 book deals with some advanced input and output devices, some advanced topics in MS Excel

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CLASS 7 The Class 7 book deals with some advanced input and output devices, some advanced topics in MS Excel

2007, creating animations in Flash, advanced features of QBASIC, HTML—the language of the web,

knowing about computer viruses and using the Internet for searching information and communicating.

Chapter 1: Computer Fundamentals

OBJECTIVE

This chapter aims at providing the knowledge of various advanced input and output devices. After reading

this chapter, the students will learn about

the working and uses of some advanced input devices such as bar code reader, OCR, OMR, MICR,

magnetic strip, smart card and touch screen

the working and uses of some advanced output devices such as plotter and LCD projector

the various types of software

the various types of computer languages

DISCUSSION

Explain to the students that the input devices also include bar code reader, OCR, OMR, MICR, magnetic

strip, smart card and touch screen, and the output devices include LCD projector and plotter. The students

must be familiar with some of these devices such as smart card and touch screen. Start the discussion by

asking about the devices with which they are already familiar.

The devices like bar code reader, MICR, OCR and OMR are new for the students and moreover, these

devices cannot be provided in a computer lab. Tell them about the places where these devices are widely

used. For example, a bar code reader is widely used in shopping malls, touch screens in ATMs, MICR in

banks, OMR in checking the answers of objective-type tests, LCD projector for showing presentations to

a large number of target audience, etc.

The magnetic strip can be explained by showing them the debit and credit cards, if possible. Optical

character reader can be compared with a scanner. The scanner is used to scan images whereas the OCR is

used to scan the text. It makes the process of data entry fast.

Also discuss with them the importance and need of a software. Tell them that the hardware devices they

have learnt so far cannot work without the software. Explain the two types of software, namely, system

software and application software. The system software is further classified into four types, operating

system, device drivers, language translators and system utilities.

On the other hand, the application software are divided into various categories according to the functions

they perform. For example, word processor is used to compose, format, edit and print electronic

documents. Image editor is used to capture, create and edit images. In the same way, other application

software can also be explained.

Also tell the students that to interact with a computer, you need a special language that a computer can

understand. The computer languages are divided into two categories, namely, low-level languages and

high-level languages. Tell them that a computer cannot understand the program written in high-level

language. Thus, it has to be converted into a low-level language so that a computer can understand. This

translation is done by the translators. The translators can be explained by comparing it with a human

translator. Suppose a person who knows only French wants to communicate with a person knowing only

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English. A translator or an interpreter is a mediator who knows both French and English who can help

both to communicate with each other.

ACTIVITY

Ask them to visit different places such as shopping malls, banks, metro stations, etc., and observe the use of the

various advanced input and output devices.

ANSWERS

Fill in the blanks.

1. Optical Character Recognition 2. Plotter

3. Magnetic strip 4. Liquid Crystal Display (LCD) projector

5. Software 6. Application software

7. Image editor 8. Mnemonics

State true or false.

1. False 2. False 3. False 4. True

5. True 6. True 7. False 8. True

Answer the questions.

1. OCR: Optical Character Recognition is the process of providing text as input to a computer by means

of a document reader. The OCR system makes the data entry fast and efficient.

OMR: Optical Mark Recognition is the technique of recognising a pre-specified mark made by a

pencil or pen on a paper. Generally, this technology is used to read answer sheets of objective-type

tests.

Magnetic Strip: It is a special type of strip which is used to store data. The data on the magnetic strip

is stored magnetically and the data once stored cannot be changed. A magnetic strip is generally used

with a plastic card. The strip is placed at the back of the card.

Smart Card: A smart card is a pocket-sized card which contains a microchip. It is possible to write

information onto the chip as well as read from it. Today, smart cards are used as SIM cards for mobile

phones, public transport payment cards, etc.

2. Magnetic Ink Character Recognition refers to the technique of recognising special magnetic codes.

These codes are printed using a special font which consists of numerals 0 to 9 and some special

characters. A special ink which contains magnetised particles of iron oxide is used to print the codes.

MICR is widely used in banks. The banking industry prefers MICR because it gives extra security

against forgeries. If a document has been forged, for example, if a counterfeit cheque is produced

using a colour photocopying machine, the magnetic-ink line will either not respond to magnetic fields

or will produce an incorrect code when scanned.

3. There are two types of plotters, namely, drum plotter and flatbed plotter.

Drum plotter: This plotter is used to produce continuous output such as plotting an earthquake activity

or for long graphic output structures such as tall building structures.

Flatbed plotter: This plotter is used in designing ships, aircraft, buildings, etc.

4. A Liquid Crystal Display (LCD) projector is a device which is used for displaying presentations

created on a computer. It is generally used when the target audience is large in number and the

computer monitor cannot be used to show the presentation. For displaying a presentation, the LCD

projector is connected to a computer which runs the presentation and the projector projects the image

on a flat surface like a screen, board, etc.

5. System software refers to a set of programs that are designed to control the operations of a computer

system. It also controls the operations of other types of software that a computer runs. The system

software can be categorised into operating systems, device drivers, language translators and system

utilities.

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6. The application software is a set of programs designed to perform a specific task. Application

software are of various types. Most commonly used application software are word processor,

electronic spreadsheet, image editor, database management system, presentation software and desktop

publishing software.

7. A computer understands only the language of 0s and 1s, known as the binary language. However,

writing programs in such a language is very difficult. Therefore, many computer languages have been

developed that are similar to natural languages like English, which are easier for programmers to use.

The computer languages are divided into two categories, namely, low-level languages and high-level

languages.

8. Assembler: An assembler translates a program written in the assembly language into the machine

language. It recognises the mnemonics used in the assembly language and substitutes the required

machine code for each instruction.

Compiler: It reads the whole program and translates the entire program at once into a series of

machine language instructions. Once compiled, the program (machine code) normally gets saved

automatically and can be executed directly.

Interpreter: An interpreter reads one statement of a program (written in a high-level language) at a

time, translates it into the machine language and executes it immediately. It continues to read,

translate and execute the statements one by one until it reaches the end of the program. Therefore, it is

slower than a compiler.

Chapter 2: Formulas and Functions in MS Excel

OBJECTIVE

In this chapter, you will learn how to use various formulae and functions in Excel to perform

mathematical calculations. After reading this chapter, the students will be able to

use the formula in Excel to perform the various mathematical operations

use the various types of functions available in Excel

understand the different types of errors that can be encountered while entering formulae and functions

in Excel

print a worksheet in Excel

DISCUSSION

Begin the discussion with an overview of all the basic concepts of Excel that have been discussed in the

earlier class. Discuss all the operations that can be performed in a worksheet learnt in previous class.

Explain the significance of Formula bar. Elaborate its importance to the students. It can also be used to

edit the data of the active cell. Formulas in Excel are used for performing calculations. Discuss the

various calculations that can be performed in Excel. Also, discuss with them the steps for entering,

editing, copying and pasting a formula in a cell.

Excel also provides some built-in formulas known as functions. Discuss with them the various types of

functions such as SUM, PRODUCT, AVERAGE, etc. Tell them that there are two ways of performing

calculations in Excel, either by using formula or by using the function. For example, the sum of the cells

B3 to B7 can be calculated either by entering the formula =B3+B4+B5+B6+B7 or by entering the

function =SUM(B3:B7). Help the students to use the functions to perform various mathematical

calculations.

Teach them the alternate methods of entering the function using the Formulas tab or the Insert Function

button on the Formula Bar in Excel. Also explain the AutoSum feature and the types of errors that can be

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encountered while entering formulae and functions in Excel. Conclude the chapter by demonstrating the

steps for printing the Excel worksheets. Encourage the students to use the shortcuts to perform different

tasks frequently; this will help them carry out the tasks quicker.

ACTIVITIES

Ask the students to create a spreadsheet with these entries.

Salary Structure

Employee Name Basic Salary HRA Total Salary Incentive Salary after incentive

Himanshu $4,000.00

Nidhi $3,000.00

Mini S. $4,500.00

Archana $3,500.00

Nandita $3,800.00

Ask them to calculate HRA, Total Salary, Incentive and Salary after incentive using these formulas.

HRA = 5% * Basic

Total Salary = HRA + Basic

Incentive = 50% of Total Salary

Salary after incentive = Total Salary + Incentive

ANSWERS

Fill in the blanks.

1. Formula 2. Product 3. $

4. Relative 5. =D$2+$C3 6. Function name, argument

7. AutoSum 8. #REF!


1. False 2. True 3. True 4. False

5. True 6. True 7. True 8. False


1. To move the data from one cell to another cell, follow these steps.

1. Click the cell from where the data is to be moved.

2. Click the Cut button in the Clipboard group on the Home tab.

3. Now click the cell where the data is to be pasted.

4. Click the Paste button in the Clipboard group.

2. a. =C3+C4+D3+D4

b. = $A$1+$A$2+D3+D4

c. = C3+$A4+D$1+$B4

3. The components of a function are as follows.

Function name: This is the name of the function that is used for calculations.

Argument(s): This is the value that a function uses to perform calculation. The argument can be a

number, range, text, formula or a cell reference. Arguments appear to the right side of the function

name and are enclosed in parentheses.

4. a. SUM b. MAX c. NOW

5. The Sum function is one of the most commonly used functions. To make this function more

accessible, Excel includes AutoSum button on the Home tab which can be used to add the values of

cells or a range of cells together. The AutoSum feature does not require specifying any function

name.

6. Some of the common types of errors that can occur in a worksheet are as follows.

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######: This specifies that the result is too long to fit in the selected cell.

#DIV/0!: This occurs when a number is divided by zero.

#REF!: This occurs when the cell reference mentioned in the formula is invalid.

#VALUE!: This occurs when any wrong operands or arguments are used within a formula.

#Name?: This occurs when an incorrect name of the function or an incorrect text is specified.

Chapter 3: Sorting and Filtering in MS Excel

OBJECTIVE

This chapter discusses some advanced features of MS Excel. After reading this chapter, the students will

be able to

sort the data in different ways in Excel

filter the data to display only the selected data satisfying certain criteria

format the selected data satisfying certain conditions

DISCUSSION

Explain to the students the concept of sorting and filtering. The sorting helps in arranging the data in the

worksheet in ascending or descending order. Demonstrate how the data in a worksheet can be sorted in

ascending or descending order using Sort A to Z and Sort Z to A options under the Sort & Filter button

present in the Editing group on the Home tab. Also show them that data can be sorted by using Sort

dialog box.

On the other hand, filtering enables to display the data in the worksheet according to some specified

condition. For example, to display only those students who had got marks greater than 75, filtering can be

used. Discuss the steps to filter the data according to the specified condition.

Demonstrate how selected data can be formatted satisfying certain condition. Show them the various

ways in which the data can be formatted based on specified conditions such as Highlight Cells Rules,

Top/Bottom Rules, Data Bars, Color Scales and Icon Sets. Encourage the students to use shortcut keys

whenever possible.

ACTIVITY

Ask the students to enter data comprising marks in five subjects of five students and perform these

operations.

Sort the data on the basis of different fields

Filter data in different ways by specifying different conditions

Format the selected data satisfying certain conditions. For example, let them try formatting the data

using Color scales, Data Bars and Icon sets.

ANSWERS

Fill in the blanks.

1. Ascending 2. Filtering 3. Conditional 4. Data Bars


1. False 2. False 3. True 4. True


1. Sorting arranges the data either in the ascending order or in the descending order, according to the

requirement. In the ascending order, the list is arranged in an ‘alphanumerical’ manner (from 0 to 9,

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or A to Z manner). In the descending order, the list is arranged in the reverse order (from Z to A or 9

to 0 manner).

2. You can sort data either by using Sort A to Z and Sort Z to A option under Sort & Filter button on the

Home tab or by using Sort dialog box.

3. To filter the data, follow these steps.

1. Click on any cell with the data in the worksheet.

2. Click the Sort & Filter button in the Editing group on the Home tab.

3. Click Filter option from the list displayed. This displays the drop-down controls next to the first

cell of each column.

4. Click the drop-down control of any column to filter the data of that particular column.

4. Custom filtering enables you to specify the criteria to filter the data in the worksheet.

5. Conditional formatting is used to format cells or a range of cells according to a particular condition.

The various ways in which you can format your data are as follows:

Highlight Cells Rules

Top/Bottom Rules

Data Bars

Color Scales

Icon Sets

6. Suppose you want to highlight the marks of students who scored more than 90 marks using Highlight

Cells Rules. For this, follow these steps.

1. Select the range of cells for which the formatting is to be applied.

2. Click the Conditional Formatting button in the Styles group, point to Highlight Cells Rules and

then click Greater Than option from the list displayed. The Greater Than dialog box appears.

3. Enter the marks for which the criterion is to be specified, that is, enter 90 in the box.

4. Click the arrow next to the with drop-down list box and select the desired format for the cells

satisfying the criterion.

5. Click OK to apply the settings.

Chapter 4: Creating Charts in MS Excel

OBJECTIVE

This chapter discusses about the charts—one of the most important feature of Excel. After reading this

chapter, the students will be able to

understand the various components of a chart and types of charts

insert various types of charts in a worksheet

DISCUSSION

Explain to the students that a chart is a graphic representation of data in the worksheet. It increases the

readability and understandability of data. A chart can also be used to compare a series of data over

different time spans. Discuss with them how difficult it is to analyse data represented in the form of rows

and columns and how easy it is to analyse data represented in the form of charts.

Give a first-hand demonstration on inserting a chart in a spreadsheet. Discuss various types of built-in

charts available in Excel along with their specific purpose. Show them the various components of charts.

Demonstrate how the different properties of these components can changed using the various options

available on Layout tab. Explain them how chart can be moved from one sheet to another or can be

inserted as a separate sheet containing only chart. Also, show them how one can change the type, layout

and style of the already inserted chart.

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ACTIVITIES

Ask the students to create a worksheet containing the following data.

Name English Math Computer

Ajay 78 80 78

Rajat 67 84 85

Sanah 80 90 89

Amit 78 89 88

Ria 56 76 67

Ask them to create different types of charts based on this data on a separate or same worksheet. Let

them change the various properties of charts using Layout tab.

Ask them to try changing the type, layout and style of the chart created by them.

ANSWERS

Fill in the blanks.

1. Data table 2. Value 3. Line 4. Chart Title 5. Layout


1. False 2. False 3. True 4. True 5. True


1. A chart is a graphic representation of data in the worksheet. It increases the readability and

understandability of data. A chart can also be used to compare a series of data over different time

spans. Any change in the data is appropriately reflected in the charts. The five components of a chart

are data series, chart title, plot area, gridlines and data labels.

2. The five types of charts are bar chart, pie chart, line chart, doughnut chart and column chart.

3. To change the style of the chart, follow these steps.

1. Select the chart whose style is to be changed.

2. Click the Design tab and then click More button on the list box in the Chart Styles group.

3. Select the desired style from the list displayed.

4. To move the chart, follows these steps.

1. Select the chart.

2. Click the Design tab and then click Move Chart button in the Location group. The Move Chart

dialog box appears.

3. Click New sheet to move chart on a separate sheet or click Object in to move in already existing

sheet. If you select Object in, select the desired sheet from the drop-down list box.

4. Click the OK button.

5. The different options available in Layout tab are Format Selection, Picture, Shapes, Text Box, Chart

Title, Axis Titles, Legend, Data Labels, Data Table, Axes and Gridlines.

Chapter 5: More on Flash

OBJECTIVE

This chapter aims at further developing and enhancing the student’s creativity in using Macromedia

Flash. Students have already learnt the basic techniques of creating a Flash document. This chapter

discusses the various features of Flash which are required to create animations. After reading this chapter,

the students will be able to

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use some advanced tools of Flash

understand the concept of layers, frames and symbols in Flash

understand the use of Timeline and how it is used in creating animations

create two types of animations, namely, frame-by-frame animations and tweened animation

DISCUSSION

Ask the students to create a Flash document using their creativity and the features of Flash discussed in

the previous class. This will help the students recall all the features they have already learnt. Now explain

and demonstrate the usage of some advanced tools such as Pen Tool, Eyedropper Tool, Gradient

Transform Tool and Free Transform Tool in enhancing the graphics created in Flash.

Discuss with them the use of Timeline in Flash and how it is used in creating animations. Explain the

concept of layers and frames. The concept of layers can be explained by taking an example of transparent

sheets stacked on the top of one another. Demonstrate them how one can insert a new layer, delete an

existing layer, rename a layer and change the order of layers. Show them how to insert and delete frames

and keyframes in the Timeline. Explain the significance of symbols and library in Flash.

Discuss the two ways of creating an animation, namely, frame-by-frame animation and tweened

animation. Take an example of creating an animation in which the ball moves from left to right on the

screen. Demonstrate them how such an animation can be created using frame-by-frame animation and

tweened animation. Explain them that tweened animation can be of two types, namely, motion tweening

and shape tweening. Tell them that the animation created for a moving ball is motion tweening. Show

them how shape tweening can be created by taking an example where one digit say 6 transforms to

another digit say 9. Also, demonstrate to them how we can move an object on a predetermined path using

the motion guide.

ACTIVITIES

Ask students to create an image of cup of a tea with hot vapours coming out of it. Ask them to

animate the vapours.

Ask students to create a simple cartoon and try animating its eyes.

Ask them to use shape tweening for converting a circle to a star.

ANSWERS

Fill in the blanks.

1. Pen 2. Eyedropper Tool 3. Playhead

4. Objects 5. Instance 6. Alpha

7. Frame-by-frame 8. Shape


1. True 2. False 3. False 4. True

5. True 6. True 7. True 8. False


1. To modify the radial gradient of an object, follow these steps.

1. Click the Gradient Transform Tool on the toolbox.

2. Click the area filled with radial gradient. An ellipse appears around the object.

3. Click the center point of gradient fill and drag it to re-position the center of a gradient.

4. Drag the width adjustment handle to either right or left to increase or decrease the width of the

gradient fill, respectively.

5. Drag the circular rotation handle in clockwise or anticlockwise direction to rotate the gradient fill.

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2. Frame is the smallest unit of Flash movie (animation) and is represented as a small rectangle on the

right side of Timeline window. Keyframes are frames in which changes in animation are defined. To

insert a keyframe in the Timeline window, follow these steps.

1. Click the rectangle where you want to insert a keyframe.

2. Click the Insert menu.

3. Point to Timeline. A submenu appears.

4. Click Keyframe to insert a keyframe.

3. Timeline is the area where the timing and sequencing of several graphics and other elements of a

Flash movie (animation) are defined. The entire content of a movie is organised in the Timeline

window in frames and layers.

4. You can imagine layers as a set of transparent sheets stacked on the top of one another to form a

complete image. With layers, you can work on the objects of one layer without affecting the objects

of the other layer. To delete a layer, select the layer to be deleted and then click the Delete Layer

button at the bottom of the Timeline window.

5. Flash stores all the symbols in its library. In the library, symbols can be added, duplicated, deleted,

edited, and updated. Every document created in Flash has its own library where all new as well as the

symbols that are imported are organised. You can view the contents of a library in the Library panel.

To open the Library panel, press the F11 key.

6. To convert a drawing into a symbol, follow these steps.

1. Click the Selection Tool and then select the drawing object you want to convert to a symbol.

2. Click the Modify menu and then click Convert to Symbol. The Convert to Symbol dialog box

appears.

3. Type an appropriate name for the symbol in the Name text box.

4. Select the type of the symbol (Movie Clip, Button or Graphic) from the Type section.

5. Click OK. The symbol is added to the library and the drawing object selected on the stage

becomes the instance of that symbol.

7. In frame-by-frame animation, the content of the stage changes in every frame. Each and every frame

needs to be manually animated to achieve the animation effect. In a tweened animation, you need to

animate just the first and the last keyframe—Flash automatically animates the intermediate frames to

produce the desired animation sequence.

8. Tweened animations can be classified in two types, namely, motion tweening and shape tweening.

Chapter 6: Advanced Features of QBASIC

OBJECTIVE

This chapter introduces the concept of iterative statements and various types of loops used in QBASIC.

After reading this chapter, the students will be able to

use FOR…NEXT, WHILE…WEND and DO…LOOP in a program

use the various built-in string and mathematical functions available in QBASIC

add graphics and sound effects in QBASIC programs

DISCUSSION

Begin the chapter with a revision of various commands and conditional statements that have been

discussed in the previous class. Make a clear assessment of each student and then prepare the study plan

for the class accordingly.

Discuss the concept of looping, the most powerful part of any programming language. Explain the use of

FOR…NEXT, WHILE…WEND and DO…LOOP giving practical examples of each. FOR…NEXT loop

is used in the situations when the exact number of iterations is known in advance. WHILE…WEND and

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DO…LOOP are used when the exact number of iterations is not known. Discuss with the students that if

the statements inside the loop have to be executed at least once, irrespective of the value of the condition

(true or false), the DO…LOOP is used.

Also, explain the concept of nesting of loops and abnormal termination of loop using the EXIT command.

QBASIC also provides some jump statements that are used to break the normal flow of the program.

Explain to them the working of GOTO statement.

QBASIC also provides some built-in functions for string manipulation and for performing mathematical

calculations. Describe these functions to the students. Tell them that different shapes such as line, square,

circle can also be drawn in QBASIC. Graphics operations in QBASIC are done using the SCREEN

command. With the help of suitable examples, explain the use of graphics and how they can enhance the

output of the programs. Tell them the use of DOSBox for writing QBASIC graphics programs. Also,

demonstrate the SOUND statement in QBASIC to add sound effects to your program.

ACTIVITY

Write a QBASIC program to draw these figures. The program should also produce a beep sound.

i. ii.

i. CLS

SCREEN 9

CIRCLE (100, 100), 50, 9

LINE (100, 100) – (100, 20), 11

LINE (100, 100) – (100, 120), 11

LINE (100, 100) – (20, 100), 12

LINE (100, 100) – (120, 100), 12

BEEP

END

ii. CLS

SCREEN 9

CIRCLE (100, 100), 100, 9

CIRCLE (100, 100), 80, 9

CIRCLE (100, 100), 60, 9

CIRCLE (100, 100), 40, 9

CIRCLE (100, 100), 20, 9

BEEP

END

ANSWERS

Fill in the blanks.

1. String functions 2. For…Next 3. Exit

4. Jump 5. Screen resolution

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1. True 2. False 3. False

4. True 5. False


1. a. WHILE...WEND: The WHILE...WEND loop executes a set of instructions as long as a given

condition is True.

b. DO...LOOP: The DO...LOOP is another type of loop that repeats a block of instructions while a

condition is True or until a condition becomes True.

c. FOR...NEXT: The FOR...NEXT is used to repeatedly execute a statement or a block of statements

for the specified number of times.

2. In addition to loop statements, there are some other statements in QBASIC which are used to break

the normal flow of the program sequence. These statements are called jump statements. Jump

statements, when used, transfer the control to a specified line in the program. The two jump

statements used in QBASIC are the GOTO and the GOSUB statements.

3. String functions deal with the manipulation of text strings only. Some of the string functions provided

in QBASIC are given here.

a. LEN: The LEN function is used to find the length of the string.

b. LEFT$: The LEFT$ function extracts the specified number of characters from the left side of a

string.

c. RIGHT$: The RIGHT$ function extracts the specified number of characters from the right side of

a string.

d. MID$: The MID$ function extracts a specified number of characters from a string, starting from a

specified position.

4. In QBASIC, different screen modes are provided to change the screen resolution. The two basic types

of modes are text mode and graphics mode. The text mode allows you to display only text on the

screen, whereas the graphics mode allows you to display text as well as graphics on the screen.

5. a. The LINE statement is used to draw a line from one point to another. It can also be used to draw

rectangular boxes. For example, consider this QBASIC program.

CLS

SCREEN 9

LINE (10, 10) - (100, 100), 10

END

b. The CIRCLE statement is used to draw a circle or an ellipse. This statement requires the

coordinates of the centre, the radius of the circle and the colour, if desired. For example, consider

this QBASIC program.

CLS

SCREEN 9

CIRCLE (100, 100), 50, 9

END

PRACTICAL EXERCISES

1. PRINT “Enter your name”

INPUT name$

FOR i = 1 TO 5

PRINT name$

NEXT i

END

2. PRINT “Table of 5 is”

FOR i = 1 TO 10

PRINT “5 * ” ; i ; “= ” ; 5 * i

12

NEXT i

END

3. PRINT “Odd numbers starting from 19”

FOR i = 19 TO 1 STEP –2

PRINT i

NEXT i

END

4a. CLS

SCREEN 9

LINE (10, 10) – (150, 60), 10, B

LINE (10, 70) – (150, 120), 10, B

LINE (10, 130) – (150, 180), 10, B

END

4b. CLS

SCREEN 9

CIRCLE (100, 100), 50

CIRCLE (100, 250), 50

END

Chapter 7: Introduction to HTML

OBJECTIVE

This chapter introduces the language of the web, that is, HTML. It explains the structure, the tags and the

elements that make up the language. After reading this chapter, the students will be able to

understand the basics of HTML

create and view a simple HTML document

understand the structure of an HTML document

DISCUSSION

Begin the discussion with HTML (HyperText Markup Language), the publishing language of the web.

Discuss with the class why it is called ‘hypertext markup language’ by explaining the meaning of the

terms ‘hypertext’ and ‘markup’. HTML is used to create web pages linked with each other by hyperlinks

and consists of some special code called markup that specifies to the web browser how parts of the web

page are to be processed. This is the reason why it is called hypertext markup language. Everything on the

web is available in the form of HTML pages.

As with other languages, HTML is a language that has its own set of keywords and syntax. Discuss the

tools that are needed to create and view HTML files. Many third party tools like MS FrontPage and

Dreamweaver make HTML coding very easy but at this level, students should be discouraged to use these

software. Instead, they should be encouraged to use a text editor like Notepad to write the source code for

HTML. The students with the help of the teacher should use the browsers like Internet Explorer and

Netscape Navigator to check whether the web page renders the same look and feel in different browsers.

Explain the significance of the tags in HTML. Explain the elements and attributes. Though HTML is not

case-sensitive, the students should be encouraged to follow a standard convention throughout the HTML

document. This will improve the readability of the source code. Explain the use of indentation of code

and the benefit of a well-indented document.

ACTIVITY

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Ask the students to design a web page on ‘Myself’. The web page should include the information about

their interests, hobbies, or any other information that they want to share with others.

ANSWERS

Fill in the blanks.

1. Hypertext Markup Language 2. HTML, HEAD, TITLE, BODY

3. Attributes 4. .html,.htm

5. WYSIWYG, text editor


1. True 2. False 3. False 4. True 5. True


1. Hypertext Markup Language comprises two major components, namely, hypertext and markup.

Hypertext is the text that enables you to organise information by connecting different pieces of

information together. Markup is the special code that specifies to the web browser how parts of the

document are to be processed. Some advantages of HTML are as follows.

It is used with all the browsers.

It does not require prior knowledge of any programming language.

2. An element is a fundamental component to create a web page. It indicates how a browser should

display the information in the web page. An element generally comprises a starting tag (and its

attributes), the content and an ending tag.

3. Elements can be classified into two types, namely, container elements and empty elements. Container

element has a starting and an ending tag. For example, to make a certain section of the text bold, the

text is enclosed between the opening tag <B> and the ending tag </B>.

Empty element has only the opening tag and its attributes. Empty elements perform their specific

functions without affecting the rest of the document. For example, the horizontal rule tag <HR> can

be used directly and does not require any ending tag.

4. To create an HTML document using Notepad, follow these steps.

1. Click the Start button and then click All Programs.

2. Click Accessories and then click Notepad. The Notepad window appears.

3. Type the HTML code.

4. To save the document, click the File menu and then click Save As. The Save As dialog box

appears.

5. Specify the location where you want to save the document from the left pane of the dialog box,

specify the name of the document in the File name text box along with the .html extension, and

then click Save.

5. Tags: They are used to describe how a web page should be displayed. They determine the major

structural components in a document such as headings, paragraphs, horizontal lines, etc.

Attributes: They provide additional information about a tag such as alignment, font colour, size of the

text, etc. Attributes are defined in a tag after the tag name. Each attribute has a name and a value. The

value of the attribute is specified after the name of the attribute and the equal to ‘=’ sign.

Element: It is a fundamental component to create a web page. It indicates how a browser should

display the information in the web page. An element generally comprises a starting tag (and its

attributes), the content and an ending tag.

6. An HTML editor is a software application that facilitates the creation of HTML documents. There are

two types of HTML editors, namely, WYSIWYG and text editor.

WYSIWYG editor: It stands for What You see Is What You Get editor. It has an in-built interface

that allows you quickly design as well as preview your web pages. The main advantage of

WYSIWYG editor is that there is no need to have knowledge of HTML tags—they are

14

automatically generated. Few WYSIWYG editors existing in the market are Microsoft Front

Page, Front page Express, Microsoft Expression and Adobe Dream Weaver.

Text Editor: It allows you to manipulate the HTML tags directly. To use text editor we need to

have knowledge of HTML tags. These editors do not generate any HTML codes. Few examples

of text editors are Notepad and WordPad.

PRACTICAL EXERCISE

<HTML>

<HEAD>

<TITLE>SAVE ENVIRONMENT-SAVE EARTH</TITLE>

</HEAD>

<BODY>

Going green is easier than you think. There are little things you can

do every day to help reduce greenhouse gases and make a less harmful

impact on the environment. Taking care of the Earth is not just a

responsibility -- it's a privilege. You may not be able to reduce

global warming, end pollution and save endangered species single-

handed, but by choosing to live an earth-friendly lifestyle you can do

a lot every day to help achieve those goals.

And by making wise choices about how you live, and the amount of

energy and natural resources you consume, you send a clear message to

businesses, politicians and government agencies that value you as a

customer, constituent and citizen.

</BODY>

</HTML>

Chapter 8: Basic HTML Elements

OBJECTIVE

The previous chapter discussed the basics of HTML, such as creating, saving and viewing an HTML

document. This chapter discusses the various HTML elements. After reading this chapter, the students

will be able to

use various elements such as BODY, BREAK, PARAGRAPH, HORIZONTAL RULE, COMMENT

and HEADING elements for creating simple HTML document

use various elements for formatting the HTML document such as BOLD, UNDERLINE, ITALIC,

CENTER and FONT elements

DISCUSSION

Begin the discussion on the basic structure of HTML document learnt in previous chapter. Demonstrate to

the students how BODY, PARAGRAPH and BREAK elements can be used to create a basic HTML

document containing text. Also show the usage of various attributes of these elements for making the

document more presentable.

Explain the usage of HORIZONTAL RULE along its various attributes in creating a horizontal line

across the web page. Show how HEADING element is used to logically organise a page into separate

sections with section headings for easier comprehension. Discuss with them that how COMMENT

element can be used to provide useful information about the HTML code to anyone who views the code

of the web page.

15

Demonstrate the use of BOLD, UNDERLINE, ITALIC, CENTER and FONT element in formatting the

various parts of web page in different ways to make it more attractive.

ACTIVITIES

Ask students to prepare a web page that contains information about their school.

Ask them to use various elements along with their attributes for formatting the web page. Encourage

students to create a web page with consistent appearance and colour scheme. Tell them that multiple

colours may distract the viewer from reading the text.

ANSWERS

Fill in the blanks.

1. </HEAD> 2. leftmargin 3. bgcolor 4. Six 5. CENTER


1. False 2. True 3. True 4. False 5. False


1. Some of the attributes associated with the BODY element are background, bgcolor, text, leftmargin

and topmargin.

Background Attribute: The background attribute is used to provide a background for the web page.

Bgcolor Attribute: The bgcolor (background color) attribute provides a coloured background to the

web page.

Text Attribute: The text attribute provides a colour to the text in the web page.

Leftmargin and Topmargin Attributes: The leftmargin attribute is used to determine the width of the

margin from the left edge of the web page. While the topmargin attribute is used to set the width of

the margin from the top of the web page.

2. There are six levels of headings in HTML that are represented by numbers within the tag. Headings

are displayed in a larger font and in bold.

The syntax of the HEADING element is

<Hn>.....</Hn>

The six HEADING tags are <H1> to <H6>. Each level heading has different font size. Heading 1 has

the largest font while heading 6 has the smallest font. A web page can contain all the levels of

headings.

3. BOLD, ITALIC and UNDERLINE elements can be used when you want to highlight some text by

making it bold, italic or underlined in the web page.

BOLD Element: This element specifies that the text enclosed in its starting and ending tags should be

displayed in bold. This element can be used between other elements while creating a web page.

ITALIC Element: This element specifies that the enclosed text should be displayed in italics.

UNDERLINE Element: This element specifies that the enclosed text should be displayed as

underlined text.

For example, consider the following code in HTML.

This text is <B> displayed in bold </B> whereas this text is <I>

displayed in italic <I>.However, this is <B><I> bold and italic </I>

</B>. This is an <U> example of underlined text</U>.

4. The CENTER element is used to align the text or an image in the centre of the web page. This

element can be used more than once in the web page. For example, consider the following code in

HTML.

<CENTER>This element is used to align text in the centre of the

browser window. </CENTER>

16

5. The align attribute of the PARAGRAPH element adjusts the positioning of the paragraph in the web

page according to the requirements. The value of the align attribute can be RIGHT, LEFT or

CENTER. By default, the paragraphs are left aligned.

6. The FONT element is used to change the size, font type or colour of the text in the web page. The

FONT element uses different attributes to enhance the text in the web page. These attributes are color,

face and size.

PRACTICAL EXERCISES

1. <HTML>

<HEAD>

<TITLE> Delhi </TITLE>

</HEAD>

<BODY bgcolor="Pink" TEXT="Blue">

<H1 ALIGN="Center"> Delhi-the Capital of India</H1>

<FONT FACE="Arial" Size="3">

Delhi, the capital of India, is one of the major tourist attractions.

Delhi is famous for its marvelous architecture and vibrant shopping

centres. Red fort, Qutab Minar, India Gate, Rajpath, Lotus Temple, etc.,

are the pride of India.

</FONT>

</BODY>

</HTML>

2. <HTML>

<HEAD>

<TITLE> Restaurant Menu </TITLE>

</HEAD>

<BODY BGCOLOR="YELLOW" TEXT="RED">

<H1 ALIGN="CENTER"><U>My Restaurant</U></H1>

<H4 ALIGN="CENTER"><I>Today's Menu</I></H4>

<HR SIZE="5" COLOR="BLUE">

<TEXT="AQUA">

BREAKFAST: <P ALIGN="CENTER">Sandwich, Omelette, Chcoloate Milk: 100/-

</P>

LUNCH <P ALIGN="CENTER"> South Indian Platter: 150/-</P> DINNER <P

ALIGN="CENTER"> North Indian Platter: 200/-</P>

<HR SIZE="1">

*Taxes extra

</BODY>

</HTML>

Chapter 9: Computer Viruses

OBJECTIVE

This chapter introduces the students to the malicious world of the computer virus. After reading this

chapter, the students will learn about the

various types of known viruses and their modus operandi

preventive measures one should take in order to save their computers from being attacked by the virus

the other types of computer threats such as worms and Trojan horses

17

DISCUSSION

A computer virus is a program generally written in a low-level programming language that is engineered

with malicious intent. A virus is usually written by expert programmers with an intention of breaking into

others’ computers. A virus is usually passed on through an infected pen drive and the Internet. Discuss the

effects that a virus can cause once it is active inside a computer.

A virus is written as a very small program in order to spread rapidly and escape detection. Reproduction

of a virus ensures that more and more copies of the virus are spread as quickly as possible. The method of

reproduction varies from virus to virus. Explain how the virus spreads inside the computer and the steps

that one should take to avoid the destruction it causes. Also, explain the various categories of viruses.

Discuss with them about the other computer threats such as worms and Trojan horses. Worms are used to

destroy or alter the data in data processing programs. On the other hand, the Trojan horse does not spread

like a virus.

Discuss the various anti-virus software available in the market such as Norton, Quick Heal, etc. Install

Norton AntiVirus software in the computer and demonstrate its working to the class. Discuss these points

which are used to prevent virus attacks.

Avoid the use of illegal software. Illegal software may contain viruses.

Always write-protect your systems and program disks.

Always keep at least one set of back-up copies of all original disks. This will not prevent a virus

infection, but it will help in the recovery process in case of a virus attack.

ACTIVITIES

Ask the students to scan all the drives of the computer and a particular folder in any drive using the

anti-virus software.

Ask the students to collect information on the history of viruses, and create a presentation on it.

ANSWERS

Fill in the blanks.

1. replicates 2. boot sector 3. anti-virus

4. Worms 5. LiveUpdate


1. True 2. False 3. True 4. True 5. True


1. A computer virus is a program which is designed to perform undesired and malicious actions by

replicating and attaching itself to other programs. These are the various ways through which viruses

can enter the system.

Viruses can enter the system when the system is booted with an infected pen drive.

Some viruses infect the system when a file is copied from an infected disk or pen drive.

Some viruses infect even when there is an attempt to erase the contents of an infected disk or pen

drive.

Viruses can also be passed from one computer to another when data or programs are accessed on

a network or a file is downloaded from the Internet.

If a virus is in the network, it tries to locate the computers that are prone to the virus attack.

2. After infecting a system, a virus tries to take control of the system. It replicates by making copies of

itself and also tries to carry out the harmful tasks written in its program.

18

3. Some of the preventive measures which should be undertaken to avoid a virus infection are listed

here.

Do not exchange floppy disks or pen drives with others. If you do so, always scan a floppy disk

or pen drive with an anti-virus software before using it.

Do not use pirated software. If the software has been obtained illegally, it may contain a virus.

Always keep at least one set of back-up copies of all original disks.

Always keep the Auto-Protect, Internet-worm Protection and E-mail scanning features of an anti-

virus software on to prevent downloading of infected files.

Update the anti-virus software frequently so that it can detect and delete new viruses.

Always check if your computer demonstrates any strange behavior such as slowing down of

computer system, disappearance of files, etc.

4. An anti-virus software is an application program which is designed to detect and remove viruses,

worms and Trojan horses from the computer system. When Norton AntiVirus detects a virus, it

performs either of these steps.

It removes the virus and repairs the infected file.

It deletes both the virus and the infected file.

If it detects an unknown virus, it quarantines (isolates) the infected file. Such a file is

stored in a special area called Quarantine. Files that are quarantined cannot interact with the

rest of the system.

5. a. Worms are programs that are designed to find their way into the data processing programs and

alter or destroy the data. Worms often use networks such as the Internet to spread from one

computer system to another, thus attacking systems that are linked through communication lines.

b. A Trojan horse is a program which performs destructive activities. It is not a virus since it does not

replicate or spread like a virus. However, it can damage files, place a virus on your computer or

break passwords. These programs enter into a computer through an e-mail or through free

programs downloaded from the Internet.

6. Computer viruses can be classified into various categories, as listed here.

Boot Sector Virus: This type of virus hides in the boot sector of a hard disk or a pen drive and

infects the start-up instructions which are required to boot the system.

Program Virus: This is the most infectious type of computer virus. It infects the executable files

such as .COM and .EXE files by attaching its copy to them.

Stealth Virus: This type of a virus attempts to hide its presence. Some of the simple techniques

include hiding the change in date and time and hiding the increase in the file size.

Multipartite Virus: This virus can infect both the boot sector of a disk as well as the executable

files. It is the worst virus because it can combine a lot of techniques to prevent its detection.

Macro Virus: This type of virus infects data files. For example, this virus can attach itself to a

word processing or a spreadsheet file (typically a Word or Excel file) as a macro.

Chapter 10: Internet Services

OBJECTIVE

This chapter discusses the various uses of the Internet. After reading this chapter, the students will be able

to

search the information on any topic from the Internet

find and locate the people online

save the information retrieved from the Internet on the hard disk

send and receive messages from one computer to another through the Internet

chat with the friends using a chat program

19

understand other ways of communication over the Internet such as videoconferencing and newsgroups

understand the concept of e-commerce

DISCUSSION

Start the discussion with the revision of the various services provided by the Internet, which they had

learnt in their previous class. Demonstrate the use of search engines and how they are helpful. Tell them

the appropriate way of putting search phrase in order to search the information on the Internet.

Show them how one can search information on any topic and increase their knowledge and awareness

using the Internet. Explain how Internet can also be used to find people and retrieve information about

them.

Discuss with them that while browsing the Internet, they might find some information very useful and

want it to be available on their computer even when not being connected to the Internet. Demonstrate how

such information can be saved on their computer system in different ways.

Explain to the students the various communication services available on the Internet such as chatting,

videoconferencing and newsgroups. Demonstrate how one can send and receive messages through e-mail

services. Also, demonstrate the use of the Internet for conducting online business. Discuss the advantages

of these Internet services over the traditional methods.

ACTIVITIES

Ask the students to search some information about Mughal Emperors from the Internet. Guide them in

entering the appropriate search phrase.

Ask them to save the information they like on their computer, and e-mail this information to any of

their friends.

ANSWERS

Fill in the blanks.

1. Search engine 2. username, mail server 3. Usenet

4. Videoconferencing 5. Acronyms 6. Crawler

7. Inbox


1. False 2. True 3. False

4. False 5. False 6. False

7. True


1. Some of the communication services provided by the Internet are e-mail, videoconferencing and

newsgroup.

E-mail: It is the process of exchanging messages electronically using computers. E-mails allow

users to communicate with each other in less time and at nominal costs.

Videoconferencing: It allows two or more people who are geographically apart from each other to

communicate and interact with each other via audio and video transmission.

Chatting: The Internet enables you to have a real-time conversation with people over the Internet.

This is known as chatting.

2. You can express and convey your emotions while writing e-mails and chatting by making use of

emoticons or smileys.

20

3. An e-mail address is divided into two parts, namely, the username and the name of the mail server.

The two parts are separated by the symbol @. The structure of an e-mail address is given here.

[email protected]

4. Chatting enables you to have a real-time conversation with people over the Internet.

Videoconferencing allows two or more people who are geographically apart from each other to

communicate and interact with each other via audio and video transmission.

5. A search engine is a software that enables you to search any information on the Internet. It is used to

find the information on a subject even if the website that contains the information is not known.

6. To find people on the Internet, follow these steps.

1. Open the web page for people search. For example, open www.people.yahoo.com.

2. To make a phone and address search, enter the First Name, Last Name, City/Town and State in the

respective text boxes and then click Search. A web page with a list of persons with search name

appears.

3. To search for the e-mail address, enter the First Name and Last Name in the Email Search section

and then click Search. A web page with the e-mail information appears (if available).

7. Providing information about the product, buying and selling of a product as well as providing services

like after sale service for the product on the Internet is referred to as E-commerce, Electronic

commerce, or EC.

PROJECT WORK

QBASIC

1. PRINT “Enter a number from 1 to 10”

INPUT N

PRINT “The Table of ” ; N ; “ is”

FOR i = 1 TO 10

PRINT N “ * ” ; i ; “= ” ; N * i

NEXT i

END

2 a. CLS

SCREEN 9

LET K = 50

FOR i = 1 to 7

CIRCLE (100, 100), k, 10

K = K + 5

NEXT i

LINE (100, 42) – (100, 158), 10

LINE (20, 100) – (180, 100), 10

END

2 b. CLS

SCREEN 9

LET K1 = 0

LET K2 = 200

FOR i = 1 to 7

LINE (K1, K1) – (K2, K2), 10, B

K1 = K1 + 10

K2 = K2 + 10

NEXT i

LINE (0, 0) – (200, 200), 10

LINE (0, 200) – (200, 0), 10

21

LINE (100, 0) – (100, 200), 10

LINE (0, 100) – (200, 100), 10

END

HTML

<HTML>

<HEAD>

<TITLE>About Us</TITLE>

</HEAD>

<BODY BGCOLOR="Aqua">

<FONT SIZE = "5"><P ALIGN="CENTER"><FONT SIZE = "8">T</FONT>OUR <FONT SIZE =

"8">I</FONT>NDIA</P></FONT>

<FONT COLOR = "Red"><CENTER><H1>Travel and Tourism Pvt

Ltd</H1></CENTER></FONT>

<H3>About Us</H3 >

<FONT COLOR = "Blue" FACE = "Comic Sans MS"><P>'Incredible India' is a common

phrase used by the tourist visiting India. We, the travel and tourist agency

recognised by the Govt. of India, are the pioneers who cater to the needs of

the tourists and provide an enriching experience of its exotic beauty, rich

cultural heritage and ecstatic spirituality. The best tour in terms of

planning and organising tours all over India is rendered.</P></FONT>

<FONT COLOR = "Blue" FACE = "Comic Sans MS"><P>Our Extensive tour planning is

backed up by experienced professionals like multilingual tour guides,

hoteliers, transporters, etc. We organise tours keeping in mind to suit your

budget. So welcome you to travel India through the pioneers in

tourism.</P></FONT>

</BODY>

</HTML>

REVISION

REVISION QUESTIONS 1

1. Fill in the blanks.

a. Optical scanner b. Copies c. True

d. OMR e. Nesting f. Six

g. Virus h. Keyframe

2. State true or false.

a. True b. False c. True

d. False e. False f. False

g. True h. False

3. Answer the questions.

a. The most commonly used application software are discussed here.

Word Processor: This is a software used to compose, format, edit and print electronic documents.

Microsoft Word and Word Perfect are examples of such programs.

Image Editor: This is a software that is designed specifically for capturing, creating, editing and

manipulating images. Adobe Photoshop and Corel Draw are examples of such programs.

Database Management Systems (DBMS): This is a collection of computer programs that allow

storage, modification and extraction of information from a database in an efficient manner. Foxpro,

Microsoft Access and Oracle are examples of DBMS.

22

b. A SOUND statement produces a sound through the computer’s internal speakers. It enables you to

produce sounds of varying frequency and time duration. This feature can be used to produce a variety

of interesting sounds.

c. A touch screen is a special kind of input device which enables you to choose an icon or a menu item

displayed on a screen by simply touching it with your finger. Touch screens use either optical grids or

a pressure sensitive film. They register the input when you touch the screen with your finger or an

object.

d. (i) PSET: The PSET statement draws a single point (pixel) on the screen of a specified colour.

(ii) COLOR: The COLOR statement is used to change the colour of the text while working with

graphics. It lets you change the colour of the text to one of the available 16 colours.

e. In a column chart different categories are placed on the x-axis and the values are placed on the y-axis

of the chart. Each data point in a series is signified by the column that rises from the x-axis.

Bar chart is similar to a column chart, except that the bars are aligned horizontally. It implies that the

y-axis is placed horizontally and the x-axis vertically.

f. The Internet, due to its enormous growth, is no longer restricted to personal use. Organisations all

over the world are using the Internet as a medium to conduct business. This includes providing

information about the product, buying and selling of a product as well as providing services like after

sale service for the product. This is referred to as E-commerce, Electronic commerce, or EC.

g. The HEAD element specifies the header information about the HTML document such as title,

keywords, etc. The content written between the opening and closing tags of the HEAD element is not

displayed in the web page.

h. The open path created in Flash has different starting and last point, whereas, in closed path created in

Flash, the starting and last point is same.

REVISION QUESTIONS 2

1. Fill in the blanks.

a. Pie b. Program

c. Norton Antivirus, Quick Heal Total Security d. Error message

e. Filtering f. TITLE

g. Business-to-Government (B2G) h. Gradient

2. State true or false.

a. True b. False c. False

d. True e. False f. True

g. False h. True

3. Answer the questions.

a. A magnetic strip is a special type of strip which is used to store data. It can store up to 60 characters.

The data on the magnetic strip is stored magnetically and the data once stored cannot be changed. A

magnetic strip is generally used with a plastic card. A special device called magnetic card reader, is

used to access the information stored on the magnetic strips.

b. Eyedropper tool in Flash is used to acquire colours and style from existing lines, brush strokes, and

fills, and applying the same to other object.

c. (i) Macro virus: This type of a virus infects data files. For example, this virus can attach itself to a

word processing or a spreadsheet file as a macro. Once the file is accessed, it replaces one of the

Word or the Excel standard macros with an infected version, which can then infect all subsequent

documents. An example of Macro virus is WM_Concept.A.

(ii) Stealth virus: This type of a virus attempts to hide its presence. Some of the simple techniques

include hiding the change in date and time and hiding the increase in the file size. Some even prevent

anti-virus software from reading the part of the file where the virus is located. An example of Stealth

virus is Stoned Monkey virus.

23

d. To rename a layer, double-click the name of the layer and then type the new name for the layer.

e. To change the style of the chart, follow these steps.

1. Select the chart whose style is to be changed.

2. Click the Design tab and then click More button on the list box in the Chart Styles group.

3. Select the desired style from the list displayed.

f. The BEEP statement in QBASIC produces a sound to draw the attention of the user to some error.

The BEEP statement, when executed, produces a single sound that lasts for 1/4 of a second. The

sound produced by the BEEP statement is audible through external speakers only.

A SOUND statement produces a sound through the computer’s internal speakers. It enables you to

produce sounds of varying frequency and time duration.

g. To view an HTML document, follow these steps.

1. Click the Internet Explorer icon pinned on the Taskbar. The Internet Explorer window appears.

2. Press Ctrl+O. The Open dialog box appears.

3. Click Browse. The Windows Internet Explorer dialog box appears.

4. Select the file to be opened from the available list or locate the file from the left pane of the dialog

box.

5. Click Open. The Open dialog box reappears with the path of the file that is to be opened.

6. Click OK. The web page is opened in the Internet Explorer.

h. A newsgroup, also known as a Usenet, is an online discussion group among people on the Internet

who share a common interest. Many websites, like www.NewsOne.net, www.google.com,

www.Usenet-Replayer.com provide the facility of newsgroups.

CLASS 7

SAMPLE PAPER-1

M.M. 100

1. Fill in the blanks. (8 Marks)

a. The letters, words and symbols used in the assembly language are called ______________.

b. The cell address A4 in a formula implies that it is a ___________ cell reference.

c. In a chart, the Y-axis is also known as the _____________ axis.

d. ___________ tool in Flash is used to draw precise paths with straight lines and smooth flowing

curves.

e. In QBASIC, ___________ deal with the manipulation of the text strings only.

f. An HTML document should always be saved with the _________or ________ extension.

g. A ___________ virus hides in the boot sector of a hard disk or a pen drive and infects the start-up

instructions, which are required to boot the system.

h. A ____________ is a software that enables you to search information on the Internet.

2. State true or false. (8 Marks)

a. OMR is widely used in banks.

b. The Name Box displays the contents of the active cell in the worksheet.

c. A pie chart is used to plot a single set of series.

d. Frame is the smallest unit of Flash movie and is represented by a small rectangle.

e. The SQR function is used to find the square of a number.

f. The PARAGRAPH element is used to insert a blank line in an HTML document.

g. Stoned Monkey virus is a type of program virus.

h. The Internet cannot be used for finding people.

3. Multiple choice questions. (6 Marks)

a. Which of the following is not a loop statement in QBASIC?

(i) DO…LOOP (ii) FOR…NEXT

24

(iii) WHILE…WEND (iv) IF…LOOP

b. Which of these Excel functions is used to determine the highest number within a range?

(i) SUM (ii) AVERAGE

(iii) MAX (iv) MIN

c. Which of these text boxes is used for entering the e-mail addresses of all the recipient(s) receiving

the copy of the same mail?

(i) To (ii) Cc

(iii) Subject (iv) Send

d. Find the odd one out.

(i) Plotter (ii) Bar Code Reader

(iii) Smart Card (iv) MICR

e. A __________ is a reusable graphic image, button, movie clip or text that is stored as a part of a

Flash movie.

(i) Symbol (ii) Frame

(iii) Keyframe (iv) Object

f. Which of these is an anti-virus software?

(i) Anti-worm (ii) Anti-Trojan

(iii) Norton AntiVirus (iv) None of these

4. Differentiate between (2 x 2 = 4 Marks)

a. Gradient Transform tool and Free Transform tool in Flash

b. BEEP and SOUND statement in QBASIC

5. Short questions. (8 x 3 = 24 Marks)

a. What do you understand by application software? Give examples.

b. What are the components of a function in Excel? Define them.

c. Write the steps to move the chart on a worksheet.

d. Write a short note on the use of Timeline in Flash.

e. Explain the working of WHILE…WEND loop.

f. Explain the terms ‘tag’, ‘attribute’ and ‘element’ in HTML.

g. Explain the terms worms and Trojan horses.

h. What is the structure of an e-mail address?

6. Long questions. (2 x 5 = 10 Marks)

a. Discuss any three means of communication over the Internet.

b. Explain the various types of string functions in QBASIC.

7. Practical (40 Marks)

CLASS 7

SAMPLE PAPER-2

M.M. 100

1. Fill in the blanks. (8 Marks)

a. The ____________ is a device which is used for displaying presentations created on a computer.

b. In Excel, a function comprises two parts: ___________ and ____________.

c. List of data arranged in an alphanumeric manner is said to be in ___________ order.

d. In Flash, whenever a layer is deleted, all its ___________ are also deleted.

e. Any loop can be terminated prematurely using the ____________ command in QBASIC.

f. The __________ element of HTML is used to align the text or an image in the centre of the web

page.

g. A computer virus ____________ by making copies of itself and also tries to carry out the harmful

tasks written in its program.

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h. ____________ folder stores all the incoming e-mails.

2. State true or false. (8 Marks)

a. System software refers to a set of programs designed to control the operation of the computer

system.

b. =A1*A6 is an example of a formula.

c. In Excel, you can sort the data up to three fields at a time.

d. You can play a Flash movie by pressing the Spacebar key.

e. The control variable in the FOR…NEXT loop controls the number of times the loop is to be

executed.

f. The tag <BODY> is placed immediately after the closing tag </HEAD>.

g. WM_Concept.A is an example of multipartite virus.

h. An indexer searches the Internet for new terms.

3. Multiple choice questions. (6 Marks)

a. The ____________ statement draws a square in QBASIC.

(i) LINE (ii) SQUARE

(iii) RECTANGLE (iv) None of these

b. Which of these is an attribute of the HORIZONTAL RULE element?

(i) Align (ii) Width

(iii) Size (iv) All of these

c. Which of these formulas is used to find the average of contents in cells A5 to A10?

(i) =AVG(A5:A10) (ii) =AVERAGE(A5, A10)

(iii) =AVERAGE (A5:A10) (iv) =AVG(A5, A10)

d. Which of these symbols separates the two parts of an e-mail address?

(i) * (ii) !

(iii) ^ (iv) @

e. OMR stands for ___________________.

(i) Optical Mark Reader (ii) Optical Magnet Reader

(iii) Optical Mark Recognition (iv) None of these

f. Which of these tools is used to acquire colours and style from existing lines and applying the

same to other object in Flash?

(i) Copy Tool (ii) Paint Bucket Tool

(iii) Eyedropper Tool (iv) Pen Tool

4. Differentiate between (2 x 2 = 4 Marks)

a. Low-level language and high-level language

b. Column chart and bar chart

5. Short questions. (8 x 3 = 24 Marks)

a. Write a short note on smart card.

b. Write a short note on AutoSum feature of Excel.

c. What are the two different methods in which you can sort data in Excel?

d. What are layers? Write the steps to delete a layer in Flash.

e. Write a short note on the jump statements available in QBASIC.

f. Discuss the role of FONT element in HTML.

g. Explain the terms macro virus and stealth virus.

h. How is chatting different from videoconferencing?

6. Long questions. (2 x 5 = 10 Marks)

a. Differentiate between the various language translators.

b. Discuss the preventive measures which should be undertaken to avoid a virus infection.

7. Practical (40 Marks)

CLASS 7 - Foundationictfoundation.org/images/publication/class7.pdf · 1 CLASS 7 The Class 7 book deals with some advanced input and output devices, some advanced topics in MS Excel

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