Slide Computer System

CSC 118 Fundamentals of Algorithm Development

Chapter 1 Overview of a

computer system

Chapter 1 Objectives

Recognize the importance of computer literacy

Recognize the importance of computer literacy

Identify the components ofa computer

Identify the components ofa computer

Identify the categories of softwareIdentify the categories of software

Identify the System Unit and memoryIdentify the System Unit and memory

Next

Discuss various computer applications in society

Discuss various computer applications in society

Identify the computer hardwareIdentify the computer hardware

A World of Computers

What is computer literacy?

p. 2 - 3 Fig. 1-1 Next

Knowledge and understanding of computers and their uses

Computers are everywhere

How is a computer defined?

What Is a Computer?

p. 3

Produces and stores results

Next

Electronic device operating under the control of instructions stored in its own memory

Processes data into information

Data that is organized, meaningful, and useful

Accepts dataRaw facts, figures, and symbols

Storage Communications

Advantages and Disadvantages of Using Computers

p. 5

What are the advantages of using computers?

Speed Reliability

Next

Consistency

Advantages and Disadvantages of Using Computers

p. 5

What are the disadvantages of using computers?

Next

Impact onLabor Force

Violation ofPrivacy

Health Risks

Public Safety

Impact onEnvironment

What Is a Computer?

What is the information processing cycle?

p. 4 - 5 Fig. 1-2 Next

Input Process Output Storage Communication

The Components of a Computer

What is an input device?

p. 6 Fig. 1-3

Hardware used to enter dataand instructions

Next

Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Input Devices below Chapter 1

The Components of a Computer

What is an output device?

p. 6 - 7 Fig. 1-3

Hardware that conveys information to one or morepeople

Next

Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Output Devices below Chapter 1

The Components of a Computer

What is the system unit?

p. 6 - 7 Fig. 1-3 Next

Case containingelectroniccomponents of the computer that are used to process data

The Components of a Computer

What are two main components on the motherboard?

p. 7

ProcessorAlso called a Central Processing Unit (CPU)

The electronic component that interprets and carries out the basic instructions that operate the computer

Next

MemoryConsists of electronic components that store instructions waiting to be executed and data needed by those instructions

The Components of a Computer

What is storage?

p. 7

Storage mediaPhysical material on which data, instructions, and information are stored

Storage mediaPhysical material on which data, instructions, and information are stored

Storage deviceRecords and retrieves items to and from a storage medium

Storage deviceRecords and retrieves items to and from a storage medium

Next

Holds data, instructions, and information for future use

The Components of a Computer

What is storage media?

p. 7 Next

USB Flash Drives

Memory Cards DVDs

CDs

Hard Disks

Retrieves(reads)

items from storagemedia

Retrieves(reads)

items from storagemedia

Records (writes)items to storage

media

Records (writes)items to storage

media

The Components of a Computer

What is a storage device?

p. 7 Next

Often functionas a source

of input

Often functionas a source

of input

The Components of a Computer

What is a USB flash drive?

p. 7 Next

Portable storage device Small and lightweight enough

to be transported on a keychain or in a pocket

The average USB flash drivecan hold about 500 millioncharacters

Portable storage device Small and lightweight enough

to be transported on a keychain or in a pocket

The average USB flash drivecan hold about 500 millioncharacters

The Components of a Computer

What is a hard disk?

p. 7 Fig. 1-4 Next

Provides greater storage capacity than a USB flash drive

Most are housed inside of the system unit

The Components of a Computer

What is a compact disc?

p. 7 Fig. 1-5 Next

Flat, round, portable metal disc CD-ROM DVD-ROM

The Components of a Computer

What is a communications device?

Nextp. 8

Hardware component that enables a computer to

send and receive data, instructions, and information

Hardware component that enables a computer to

send and receive data, instructions, and information

Occurs over cables, telephonelines, cellular radio networks,

satellites, and other transmission media

Occurs over cables, telephonelines, cellular radio networks,

satellites, and other transmission media

Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Communications Devices below Chapter 1

Consists of a seriesof instructions thattells the computer

what to do andhow to do it

Consists of a seriesof instructions thattells the computer

what to do andhow to do it

Computer Software

What is software?

p. 10 Next

Also called aprogram

Also called aprogram

Computer Software

What is a graphical user interface (GUI)?

p. 10 Fig. 1-8 Next

Allows you to interact with the software using graphics and visual images such as icons

Controls how you enter data and instructions and how the screen displays information

Computer Software

What is system software?

p. 10 - 11

Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices

Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices

Utility Programs allow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs

Utility Programs allow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs

Next

Programs that control or maintain the operations of the computer and its devices

Computer Software

What is application software?

p. 11 Fig. 1-9 Next

Presentation Graphics

Spreadsheet

Database

Word Processing

Programs designed to make users more productive

Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Application Software below Chapter 1

Computer Software

How do you install and run programs?

p. 12 Fig. 1-10 Next

Step 1: INSTALLWhen you insert a greeting card program discin the CD drive for the first time, the computerbegins the procedure of installing the greetingcard program on the hard disk.

Step 2: RUNOnce installed, you can instruct the computer to run the greeting card program. The computer transfers instructions from the hard disk to memory.

Step 3: USEThe greeting card program executes. Using this program, you can create custom greeting cards.

Computer Software

What is a programmer?

p. 12 Fig. 1-11 Next

Someone who developsapplication or system software Programmer writes

the instructions todirect the computer toprocess data intoinformation

Computer Applications in SocietyWhat are some examples of computer applications in society?

p. 22-25 Figs. 1-30–1-37 Next

Education Finance Government Health Care Science Publishing Travel Manufacturing

Summary of Introduction to Computers

The computer and its componentsThe computer and its components

What is a network?What is a network?

The InternetThe Internet

Types of softwareTypes of software

Categories of computersCategories of computers

Types of computer usersTypes of computer users

Computer applications in societyComputer applications in society

Chapter 1 Complete