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INFORMATION TECHNOLOGY, THE INTERNET, AND YOU

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Competencies
Explain the five parts of an information system Distinguish between application and system software Distinguish between special purpose and general purpose application software Identify the types of computers and microcomputers Describe the different types of hardware
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Competencies cont.
Define data and describe files Explain connectivity and the wireless revolution Describe the Internet and the Web

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Five Parts of an Information System
1. People 2. Procedures 3. Software 4. Hardware 5. Data

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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People
Most important part of any system Contact is …
Direct Indirect

Computer uses
Business & Entertainment Education & Medicine

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Software
Programs Instructions Two major kinds of software
System Software Application Software

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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System Software
A collection of programs Enables the application software to interact with the hardware Background software that helps the computer manage its own resources

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Application Software
“End-user” software Two major categories
General purpose Special purpose

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Hardware
Equipment that processes the data Controlled by software Physical devices
Keyboard Mouse Monitor Other devices
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Types of Computers
Supercomputers Mainframe computers Minicomputers Microcomputers

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Supercomputers

High capacity Used by large organizations
Tracking space Tracking weather

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Mainframe Computers
Occupies specially wired, air-conditioned rooms Capable of great processing speeds and data storage Not as powerful as supercomputers

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Minicomputers
Known as midrange computers Medium-size companies Used by departments of large companies

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Microcomputers
Least powerful Widely used Four types
Desktop Notebook or laptop Tablet PC Handheld

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Microcomputer Hardware
System unit Input/output devices Secondary storage Communications

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Data
Raw, unprocessed facts Processing creates information Stored electronically in files
Document files Worksheet files Database files Presentation files

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Connectivity, the Wireless Revolution, and the Internet
Connectivity
Sharing of information Wireless communication is becoming popular

Computer networks
Connected communication system of computers Largest network is the Internet

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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A Look to the Future Computer Competent
The Internet & the Web Powerful software & hardware Privacy & security Organizations Changing Times

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Key Terms
application software (9) basic application (9) chassis (12) communication device (14) compact disc (CD) (14) computer competency (3) computer network (16) Computing Essentials CD (8) connectivity (16) Data (5) database file (15) desktop computer (11) device driver (9) digital versatile disk (DVD) (14) digital video disc (DVD) (14) document file (15)

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Key Terms
end user (4) floppy disk (14) general-purpose (9) application handheld computer (11) hard disk (14) hardware (5) information (4) information system (4) information technology (IT) (5) input device (12) Internet (16) keyboard (12) laptop computer (11) mainframe computer (11) memory ( 12) microcomputer (11)
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Key Terms
microprocessor (12) midrange computer (11) minicomputer (11) modem (14) monitor (12) mouse (12) network (16) notebook computer (11) operating system (9) optical disk ( 14) output device (12) palm computer (11) people (4) personal digital assistant (PDA) (11) presentation file (15) primary storage (12) printer (12)
© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Key Terms
procedures (4) program (4) random access memory (RAM) (12) secondary storage device (14) service program (9) software (4) specialized application (10) special-purpose application (10) supercomputer (11) SimNet Concepts (8) system cabinet (12) system software (9) system unit (12) tablet PC (11)

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Key Terms
temporary storage (12) utility (9) video display screen (12) Web (16) wireless revolution (16) worksheet file (15) World Wide Web (WWW) (16)

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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FAQs
What is an information system? What is IT? How does raw data become information? What is an operating system? What are specialized applications? Please give some examples. Is the Internet the same as the World Wide Web?

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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Discussion Questions
How are you using information technology? Explain the difference between system and application software. Describe some of the uses for handheld computers. Why is the wireless revolution so important?

© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

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