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Chapter 1 Overview The Foundation for Your Future. © The McGraw-Hill Companies, Inc., 2000. Overview. Users and professionals Computer literate and computer competent Information systems Hardware Software. Overview (continued). Computer systems Computer development Connectivity

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Chapter 1 overview the foundation for your future l.jpg

Chapter 1

Overview

The Foundation for Your Future

© The McGraw-Hill Companies, Inc., 2000


Overview l.jpg
Overview

  • Users and professionals

  • Computer literate and computer competent

  • Information systems

  • Hardware

  • Software

© The McGraw-Hill Companies, Inc., 2000


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Overview (continued)

  • Computer systems

  • Computer development

  • Connectivity

  • Interactivity

  • Digital convergence

© The McGraw-Hill Companies, Inc., 2000


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Users

  • Be ready for the job market

  • Use computers for work and personal tasks

© The McGraw-Hill Companies, Inc., 2000


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Differentiation

  • Computer Professionals

    • expertise and/or a minimum of a two-year technical degree

    • industry uses many names

      • programmer, engineer, systems analyst

      • network and database administrators

© The McGraw-Hill Companies, Inc., 2000


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Computer Literate vs. Competent

  • Computer literacy

    • understanding what a computer is and what it can do

  • Computer competency

    • using skills to meet information needs and improve productivity

© The McGraw-Hill Companies, Inc., 2000


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Competency

  • Skill mastery covered:

    • terms

    • functions

    • uses

© The McGraw-Hill Companies, Inc., 2000


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Computer Information Systems

  • Hardware

  • Software

  • Data and information

  • People

  • Procedures

  • Communications

© The McGraw-Hill Companies, Inc., 2000


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Information and Knowledge

  • Information

    • data organized into useful information

  • Knowledge

    • application of reasoned analysis of information

© The McGraw-Hill Companies, Inc., 2000


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People

  • Most important component of computer system

  • Follow procedures

    • using documentation, reference guides, and user guides

    • guides are primarily available as electronic help files and Internet help desks

© The McGraw-Hill Companies, Inc., 2000


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Digital and Analog Systems

  • Digital based on electronic circuitry

    • 1s and 0s, or on and off

    • each 1 or 0 is called a bit; or binary digit

    • Computers use digital data representation

© The McGraw-Hill Companies, Inc., 2000


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Analog Systems

  • Analog

    • continuously variable values, along a range, such as temperature and pressure values

    • traditional analog recording devices are humidity recorders, mercury thermometers, and pressure gauges

    • standard telephone lines transmit analog signals

© The McGraw-Hill Companies, Inc., 2000


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Computer Hardware

  • 5 categories

    • input

    • processing and memory

    • output

    • storage

    • communications

© The McGraw-Hill Companies, Inc., 2000


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Keyboard

Mouse

Scanner

Microphone

Input

© The McGraw-Hill Companies, Inc., 2000


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Processing and Memory

  • Motherboard

  • CPU

  • Memory

    • many types of RAM

© The McGraw-Hill Companies, Inc., 2000


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Output Hardware

  • Hardcopy output

    • graphics

    • letters

  • Softcopy output

    • monitor

    • audio

      • music from MP3 for example

© The McGraw-Hill Companies, Inc., 2000


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Secondary Storage Hardware

  • Permanent or nonvolatile

    • magnetic disks: disk cartridges, hard drives, floppy disks

    • optical storage (optical disks)

    • tape

© The McGraw-Hill Companies, Inc., 2000


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Communications Hardware

  • Facilitate networks

    • modems

    • hubs and other components of a network

© The McGraw-Hill Companies, Inc., 2000


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Computer Software

  • System software

    • communication with hardware

    • resource management

    • facilitates communication among application programs

© The McGraw-Hill Companies, Inc., 2000


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Computer Software

  • Applications software

    • benefits or assists the user

© The McGraw-Hill Companies, Inc., 2000


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Types of Computers

  • Supercomputers

  • Mainframe computers

  • Workstations

  • Microcomputers

© The McGraw-Hill Companies, Inc., 2000


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Types of Computers (continued)

  • Microcontrollers

    • embedded or dedicated computers: from calculators to automobiles

  • Server

    • network

    • Web

© The McGraw-Hill Companies, Inc., 2000


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Information Explosion

  • Increased processing power

  • More information more quickly

  • More paper in the computer era than before it!

© The McGraw-Hill Companies, Inc., 2000


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Data Overload?

  • Information does not produce knowledge

    • knowledge implies synthesis of that information

    • therefore, knowledge must be useful: complete, accurate, relevant, and timely (CART)

© The McGraw-Hill Companies, Inc., 2000


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Connectivity

  • Connecting devices for communication

    • voice, data, multimedia

  • foundation for information age

  • E-mail

    • send and receive messages over a local area network or a large network, including the Internet

  • © The McGraw-Hill Companies, Inc., 2000


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    Connectivity (continued)

    • Databases

      • for research and job prospects

    • Telecommuting

      • Working at home or on the road

      • Communicating with the office through phone, fax, and/or computer

    • On-line shopping and E-commerce

    © The McGraw-Hill Companies, Inc., 2000


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    Digital Convergence

    • Merger of devices, media, and services

      • computers

      • communications

      • consumer electronics

      • entertainment

      • mass media

    © The McGraw-Hill Companies, Inc., 2000


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    Technological Convergence

    • Communications

      • same information gained in potentially multiple ways

        • satellite

        • films

        • recordings

        • radio

        • telephones

        • television

    © The McGraw-Hill Companies, Inc., 2000


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