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Objectives Define the term computer Identify the components of a computer Explain why a computer is a powerful tool Differentiate among the various categories of software Describe the categories of computers and their uses Identify the various types of computer users p. 1.2

The Digital Revolution ,[object Object],[object Object],p. 1.2 Fig. 1-1

What Is a Computer? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.4

What is a Computer? ,[object Object],p. 1.4 Software The series of instructions that tells the hardware how to perform tasks Hardware The electric, electronic, and mechanical equipment that makes up a computer

[object Object],[object Object],What is a Computer? p. 1.5 Input Any data or instructions you enter into a computer Output Data that has been processed into information Storage Area in a computer that can hold data and information for future use Communication The capability of communicating with other computers Process Manipulate the input (data) to produce output (information)

The Components of a Computer ,[object Object],speaker p. 1.5 Fig. 1-3 printer scanner speaker PC camera microphone digital camera system unit keyboard modem monitor mouse

The Components of a Computer ,[object Object],[object Object],p. 1.5 Fig. 1-3 Click to view Web Link then click Input Devices scanner microphone keyboard mouse PC camera digital camera

The Components of a Computer ,[object Object],[object Object],p. 1.6 Fig. 1-3 Click to view Web Link then click Output Devices printer monitor speakers

The Components of a Computer ,[object Object],[object Object],[object Object],[object Object],p. 1.6 Fig. 1-3 CD-RW drive CD-ROM or DVD-ROM drive hard disk drive floppy disk drive Zip ® disk drive

The Components of a Computer ,[object Object],p. 1.6 External Device Also called a peripheral Attaches to the system unit Internal Component Resides inside the system unit

The Components of a Computer ,[object Object],[object Object],p. 1.7 Click to view Web Link then click Storage Devices ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Components of a Computer ,[object Object],p. 1.7 Fig. 1-3 CD-RW drive hard disk drive CD-ROM or DVD-ROM drive ZIP ® drive floppy disk drive

Why Is a Computer So Powerful? ,[object Object],p. 1.8 Speed Billions of operations can be carried out in a single second Reliability Dependable because components have a low failure rate so they produce consistent results Communications Two connected computers can share stored data, instructions, and information Storage Enormous amounts of data can be stored and made available for processing anytime it is needed Accuracy If data is entered correctly and program works properly, the results are error-free — garbage in, garbage out (GIGO) accuracy of output depends on accuracy of input

Categories of Computers ,[object Object],p. 1.19 Fig. 1-20

Personal Computers ,[object Object],[object Object],p. 1.19 ,[object Object],[object Object],[object Object],Microprocessor The single chip that performs all the processing functions on a personal computer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Personal Computers ,[object Object],p. 1.19 Fig. 1-21 & 22 p. 1.19 Fig. 1-21 & 22 The PC and compatibles use the Windows operating system The Apple Macintosh uses the Macintosh operating system (Mac OS)

Personal Computers ,[object Object],[object Object],p. 1.20 Fig. 1-23 Click to view Web Link then click Personal Computers

Personal Computers ,[object Object],[object Object],[object Object],p. 1.20 Fig. 1-23

Personal Computers ,[object Object],[object Object],[object Object],p. 1.21 Fig. 1-24

Personal Computers ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.21

Personal Computers ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.22 Fig. 1-25

Personal Computers ,[object Object],[object Object],[object Object],[object Object],Click to view video p. 1.22 Fig. 1-26

Handheld Computers ,[object Object],[object Object],[object Object],p. 1.23 Fig. 1-27 Click to view Web Link then click Handheld Computers

Handheld Computers ,[object Object],p. 1.23 ,[object Object],[object Object],[object Object],[object Object]

Handheld Computers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.23 Fig. 1-28

Handheld Computers ,[object Object],[object Object],p. 1.24 Fig. 1-29 Web-enabled two-way pager Web-enabled cellular telephone Web-enabled handheld computer

Internet Appliances ,[object Object],[object Object],p. 1.24 Fig. 1-30

Mid-Range Servers ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.25 Fig. 1-32

Mid-Range Servers ,[object Object],p. 1.25 ,[object Object],[object Object],[object Object],[object Object],Device with a monitor and keyboard used to access a server

Mainframes ,[object Object],[object Object],[object Object],[object Object],p. 1.26 Fig. 1-33

Supercomputers ,[object Object],[object Object],p. 1.26 Fig. 1-34 ,[object Object]

Computer Software ,[object Object],[object Object],Click to view Web Link then click Computer Programs p. 1.10 Directs computer to perform alternative operations Prints a report Stores information on disk Allows you to input data and stores it in memory Uses data in memory in calculations Displays information on monitor Compares values stored in memory

Computer Software ,[object Object],[object Object],p. 1.12 Operating System (OS) Set of programs containing instructions that coordinate all the activities among computer hardware devices Utility program Type of system software that performs a specific task, usually related to managing a computer, its devices, or its programs

Computer Software ,[object Object],[object Object],Click to view Web Link then click Application Software p. 1.13 Word processing software Spreadsheet software Database software Presentation graphics software Suite Four popular software applications bundled together as a single unit Spreadsheet software Database software Presentation graphics software Word processing software

Elements of an Information System ,[object Object],[object Object],p. 1.27 Fig. 1-35 Click to view Web Link then click Minorities in Technology Click to view Web Link then click Women in Technology 1. Hardware 2. Software 1. Hardware 3. Data 1. Hardware 2. Software 4a. People (IT personnel) 1. Hardware 2. Software 3. Data 4b. People (users) 1. Hardware 2. Software 3. Data 4a. People (IT personnel) 5. Procedures 1. Hardware 2. Software 3. Data 4a. People (IT personnel) 4b. People (users)

What is a Computer? ,[object Object],[object Object],[object Object],p. 1.4

Examples of Computer Usage ,[object Object],p. 1.28 Fig. 1-36 Large Business Home Mobile Small Office/Home Office Power

Examples of Computer Usage ,[object Object],p. 1.29 Fig. 1-37 research finance and business management Web access entertainment

Examples of Computer Usage ,[object Object],[object Object],p. 1.30 Fig. 1-38

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],p. 1.30 Click to view video

[object Object],Examples of Computer Usage Web access spreadsheet ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.31 Fig. 1-39

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.31

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.32 Fig. 1-40

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.33 Fig. 1-41

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],p. 1.34 Fig. 1-43 Click to view video

Examples of Computer Usage ,[object Object],[object Object],[object Object],p. 1.34 Fig. 1-44

Examples of Computer Usage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 1.35 Fig. 1-45

[object Object],p. 1.4 Fig. 1-2 Data Collection of raw unprocessed facts, figures, and symbols Information Data that is organized, meaningful, and useful

Summary of Introduction to Computers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary of Introduction to Computers (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object]

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