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1. CHAPTER. INFORMATION TECHNOLOGY, THE INTERNET, AND YOU. Competencies . Explain the five parts of an information system Distinguish between application and system software Distinguish between special purpose and general purpose application software

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1

CHAPTER

INFORMATION TECHNOLOGY, THE INTERNET, AND YOU


Competencies
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


Competencies cont
Competencies cont.

  • Define data and describe files

  • Explain connectivity and the wireless revolution

  • Describe the Internet and the Web


Five parts of an information system

People

Procedures

Software

Hardware

Data

Five Parts of an Information System


People
People

  • Most important part of any system

  • Contact is …

    • Direct

    • Indirect

  • Computer uses

    • Business & Entertainment

    • Education & Medicine


Software
Software

  • Programs

  • Instructions

  • Two major kinds of software

    • System Software

    • Application Software


System software
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


Application software
Application Software

  • “End-user” software

  • Two major categories

    • General purpose

    • Special purpose


Hardware
Hardware

  • Equipment that processes the data

  • Controlled by software

  • Physical devices

    • Keyboard

    • Mouse

    • Monitor

    • Other devices


Types of computers
Types of Computers

  • Supercomputers

  • Mainframe computers

  • Minicomputers

  • Microcomputers


Supercomputers
Supercomputers

  • High capacity

  • Used by large organizations

    • Tracking space

    • Tracking weather


Mainframe computers
Mainframe Computers

  • Occupies specially wired, air-conditioned rooms

  • Capable of great processing speeds and data storage

  • Not as powerful as supercomputers


Minicomputers
Minicomputers

  • Known as midrange computers

  • Medium-size companies

  • Used by departments of large companies


Microcomputers
Microcomputers

  • Least powerful

  • Widely used

  • Four types

    • Desktop

    • Notebook or laptop

    • Tablet PC

    • Handheld


Microcomputer hardware
Microcomputer Hardware

  • System unit

  • Input/output devices

  • Secondary storage

  • Communications


Data

  • Raw, unprocessed facts

  • Processing creates information

  • Stored electronically in files

    • Document files

    • Worksheet files

    • Database files

    • Presentation files


Connectivity the wireless revolution and the internet
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


A look to the future computer competent
A Look to the FutureComputer Competent

  • The Internet & the Web

  • Powerful software & hardware

  • Privacy & security

  • Organizations

  • Changing Times


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)

Key Terms


Key terms1

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)

Key Terms


Key terms2

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)

Key Terms


Key terms3

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)

Key Terms


Key terms4

temporary storage (12)

utility (9)

video display screen (12)

Web (16)

wireless revolution (16)

worksheet file (15)

World Wide Web (WWW) (16)

Key Terms


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?


Discussion questions
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?


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