1111CH

AP

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INFORMATION TECHNOLOGY, THE INTERNET,

AND YOU

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

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

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Competencies cont.

Define data and describe files

Explain connectivity and the wireless revolution

Describe the Internet and the Web

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Five Parts of an Information System

1. People

2. Procedures

3. Software

4. Hardware

5. Data

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People

Most important part of any system

Contact is …Direct

Indirect

Computer usesBusiness & Entertainment

Education & Medicine

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Software

Programs

Instructions

Two major kinds of softwareSystem Software

Application Software

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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

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“End-user” software

Two major categoriesGeneral purpose

Special purpose

Application Software

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Hardware

Equipment that processes the data

Controlled by software

Physical devicesKeyboard

Mouse

Monitor

Other devices

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Types of Computers

Supercomputers

Mainframe computers

Minicomputers

Microcomputers

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Supercomputers

High capacity

Used by large organizationsTracking space

Tracking weather

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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

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Minicomputers

Known as midrange computers

Medium-size companies

Used by departments of large companies

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Microcomputers

Least powerful

Widely used

Four typesDesktop

Notebook or laptop

Tablet PC

Handheld

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Microcomputer Hardware

System unit

Input/output devices

Secondary storage

Communications

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Data

Raw, unprocessed facts

Processing creates information

Stored electronically in filesDocument files

Worksheet files

Database files

Presentation files

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Connectivity, the Wireless Revolution, and the Internet

ConnectivitySharing of information

Wireless communication is becoming popular

Computer networksConnected communication system of computers

Largest network is the Internet

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A Look to the FutureComputer Competent

The Internet & the Web

Powerful software & hardware

Privacy & security

Organizations

Changing Times

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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)

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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)

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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)

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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)

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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)

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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?

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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?