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Title:Introduction to Computer

Instructor:

ILTAF MEHDI

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To shareTo share

Networks and the Internet

A network is a collection of computers and devices connected together

ResourcesResources

Hardware devices

Hardware devices

Software programs

Software programs

DataData To save time and

money

To save time and

money

InformationInformation

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Networks and the Internet

What is the Internet? Worldwide collection of networks that connects

millions of businesses, government agencies, educational institutions, and individuals

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Networks and the Internet

Why do users access the Internet?

2. Information

3. Shopping

4. Banking and Investing

5. Classes

6. Entertainment

1. Communications

7. Download Music

8. Share Information

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Networks and the Internet

What is the Web?

A Web site is a collection of

related Web pages

A Web site is a collection of

related Web pages

A Web page contains text, graphics, audio, video, and links to other Web pages

A Web page contains text, graphics, audio, video, and links to other Web pages

You can share information by

creating Web pages or posting photos on

a photo sharingcommunity

You can share information by

creating Web pages or posting photos on

a photo sharingcommunity

Billions of documents, called Web pages, available to anyone connected to the Internet

A podcast is recorded audio

stored on a Web sitethat can be

downloaded

A podcast is recorded audio

stored on a Web sitethat can be

downloaded

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Consists of a seriesof instructions thattells the computer

what to do

Consists of a seriesof instructions thattells the computer

what to do

Computer Software

What is software?

Also called aprogram

Also called aprogram

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Computer Software

What is a graphical user interface (GUI)? Allows you to

interact with the software using graphics and icons

Controls how you enter data and how the screen displays information

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Computer Software

What is system software?

Operating System (OS)Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software

Operating System (OS)Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software

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

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

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

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Computer Software

What is application software?

Presentation Graphics

Spreadsheet

Database

Word Processing

Programs that perform specific tasks for users

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Computer Software

How do you install and run programs?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 3: USEThe greeting card program executes. Using this program, you can create custom greeting cards.

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.

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Computer Software

What is a programmer? Someone who develops

application or system software Programmer writes

the instructions todirect the computer toprocess data intoinformation

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Categories of Computers

What are the categories of computers?Personal Computers

(desktop)

Mobile Computers andMobile Devices

Servers

Mainframes

Supercomputers

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Personal Computers

What are the two most popular series of personal computers?

PC and compatibles use the Windows operating system

Apple Macintosh uses the Macintosh operating system (Mac OS)

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Personal Computers

What is a desktop computer? Designed so all of the components fit on or under

a desk or table

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Servers

What types of servers are there?

Mainframe Very powerful, expensive computer that supports thousands of computers

Supercomputer The fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

A server controls access to network resources and provides centralized storage

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

Education Finance Government Healthcare Science Publishing Travel Manufacturing

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Summary of Chapter No 1 :

The computer and its componentsThe computer and its components

What is a network?What is a network?

The Internet and the World Wide Web

The Internet and the World Wide Web

Types of softwareTypes of software

Categories of computersCategories of computers

Computer applications in societyComputer applications in society