COMPUTER TECHNOLOGY

COMPUTER TECHNOLOGYINTRO NOTES – Warning! This will be

on a test!

What is a Computer?

A computer is an electronic device that:1. Accepts input2. Processes data3. Stores data4. Produces Output

What are the types of computers?

SOFTWARE vs HARDWAREA SET OF INSTRUCTIONS, A

PROGRAM

SOFTWARE Microsoft Office Suite▪ Word▪ Excel▪ Access▪ PowerPoint▪ Publisher▪ Outlook

Windows Movie Maker

EQUIPMENT

HARDWARE Input Devices▪ Keyboard▪ Microphone▪ Scanner

Output Devices▪ Printer▪ Screen/Monitor▪ Fax▪ Speakers

Binary Language

A computer uses a binary language to work Binary means “2”

Series of ON and OFF switches 1 and 0 in binary code

The more switches you have, the more combinations of ON and OFF you can make

Bit

Smallest unit of a computer program

This is the series of 1’s and 0’s

“Bit” stands for binary digits

Turn the circuits on and off

Nibble- A group of 4 bits

Byte

2 nibbles or 8 bites= 1 Byte

A basic unit of instruction

A character in the alphabet, a space, a number, symbols, etc.

If you press a key on the keyboard, it is translated into a byte

How does it work?

The smallest unit of storage is a Bit. It takes 8 bites to equal 1 Byte.

Information is stored in BYTES – a basic unit of instruction. Every character in the alphabet, a space, a number, symbols—every time you press a key on the keyboard, you create a BYTE!

STORAGE SPACE

Bite – smallest unit of storage

BYTE – a unit (one letter, number, etc.)

KILOBYTE – 1000 bytes

MEGABYTE – 1,000,000 (one million) bytes

GIGABYTE – 1,000,000,000 (one billion) bytes

TERABYTE – 1,000,000,000,000 (one trillion) bytes

PROGRAM

A set of computer instructions that is read by the computer to do tasks

A FILE and a PROGRAM are not the same thing!

NETWORK

LAN – Local Area Network – within a building WAN – Wide Area Network – between buildings Share information, programs, printers across the

network

ERGONOMICS Describes computer

environment Comfort level of user Room temperature Chair comfort Wall texture Lighting Window Coverings Monitor and keyboard

tilting

PASSWORD

A secret code that only the user knows to get into his/her files

Do not share this password with anyone, as it breaks down the security system

CLOUD

Cloud computing lets users utilize services without having to purchase hardware or install software since it is all web-based

"The cloud" refers to services and technologies that allow computing to take place over the internet in real time.

Common cloud technologies Gmail FacebookSkype.

SOCIAL MEDIA

Can include: Facebook Instagram Twitter

refers to the set of web-based and mobile technologies that are used for communication and interaction

VIRUS

A computer program someone writes to be a trouble-maker or to cause damage

Usually attached to an innocently named file or email and when the file is opened, it causes the virus to drop into the computer system.

If introduced on a network, consequences can be devastating

Cookies

Good for business because they target people that like their type of sites and have an increased chance of making a sales

Good for customer since they see sites of interest

Bad for customer since they lose part of their privacy and cookies take up room on the hard drive and could slow down the computer’s speed

Internet programs that keep track of what type of sites you have visited and then sell that information to companies of the same type of sites …

Jobs and Wozniak PC’s were invented in 1977 by Steve Jobs and

Steve Wozniak—19 years old! Steve Jobs also invented the iPod!

Pictures of First PC’s

Steve Jobs and Steve Wozniak’s first personal computerCourtesy of the Smithsonian’s Museum of American History in Washington, D. C.

Wang Word Processor—only word processing! But no more problems with “typos”! Note the very small screen.Courtesy of the Smithsonian’s Museum of American History in Washington, D. C.

Impact of Jobs and Woz

Founded Apple, Inc.

Name came from an apple orchard commune in Oregon that Steve Jobs belonged to with his girlfriend

“Apple” comes before “Atari” in the phonebook

Impact of Jobs and Woz

First to mass market PC- you didn’t have to put it together

Went for the school market

The new generation would grow up with PCs and use them in business

More Pictures

. . .updating the Apple—these machines have a larger monitor, and check out the disk drives! Screens were black with white lettering!Courtesy of the Smithsonian’s Museum of American History in Washington, D. C.

the Apple //e—this machine ran quicker and used AppleWorks—the forerunner to the Microsoft Office Package. Black Screen with GREEN lettering! Courtesy of the Smithsonian’s Museum of American History in Washington, D. C.

Still impacts us today…

Bill Gates

Bill Gates began programming when he was 13 years old founded Microsoft in 1975 with his childhood friend, Paul Allen

Bill Gates (Cont’d)

Went to Harvard Dropped out his Junior year

Vision that computers would be a valuable BUSINESS tool

Easier to work with compared to Jobs

ETHICS

“Old fashioned” morals and values still apply Document your sources Do not use the computer to take or steal or use

information without express permission

Basic Computer Sense

SAVE YOUR WORK OFTEN!!

Back up your files and keep them in a separate location

Use Antivirus software

No food or drink allowed in computer lab or near computers

There are Four Font Types

Serif fonts with extra curves; used for titles; example Bakersville Old Face

San Serif no extra curves added to letters; used for the body of articles or papers; example Arial

Script Cursive; used for formal invitations; example Lucida Handwriting

Symbol pictures or some sort of symbol;used for custome bullets example; Wingding \DGKBUHkigh