ICDL Module 1

Concepts of Information Technology

David Varley

ICDL Foundation
IMPORTANT NOTICE
DISCLAIMER
License

2004


Table of Contents

1. General Concepts
Hardware, Software, Information Technology
Types of Computer
Main Parts of a Personal Computer
Computer Performance
2. Hardware
Central Processing Unit
Parts of the CPU
Memory
Memory Measurements
Units of memory
Input Devices
Keyboard
Mouse
Touchpad
Trackball
Lightpen
Bar code reader
Joystick
Digital camera
Microphone
Scanner
Output Devices
Visual Display Unit (VDU)
Printers
Plotters
Speakers
Input/Output Devices
Storage Devices
Diskette
Zip disk
Data cartridge
CD ROM
DVD
Hard disk drive
Flash memory and memory sticks
Relative cost of storage
Formatting disks
3. Software
Types of Software
Operating System Software
Applications Software
Graphical User Interface
Systems Development
Program Development Life Cycle
4. Information Networks
Networks
Client-server and peer-to-peer networks
LAN
WAN
Advantages of Networking
Sharing Printers and Files
File Servers
Printer Servers
Application Servers
Internet Connection Sharing (Proxy Servers)
Intranet, Extranet, Internet
Internet
Intranet
Extranet
Uses of the Internet
The World Wide Web
The Telephone Network in Computing
PSTN
ISDN
ADSL
Communications Terminology
Analogue signals
Digital signals
Modems
Data transfer rates
5. The Use of IT in Everyday Life
Computers at Work
Corporate Application
Public Sector Applications
Inland Revenue
National census and other demographic data
Vehicle Registration
Voting registers
Electronic voting
National Identity System
Health Sector Applications
Patient records
Scheduling
Ambulance control systems
Diagnostic tools
Specialised surgical equipment
Education Sector Applications
Student records
Timetabling
CBT
Automated examinations
Distance learning
Homework using the Internet
Teleworking Applications
Advantages of Teleworking
Disadvantages of Teleworking
Electronic World
Electronic Mail
e-Commerce
Doing Business over the Net
6. Health, Safety and Environment
Ergonomics
Monitors
Keyboards and mouse
Desks and chairs
Health Issues
Lighting and ventilation
Precautions
Adequate earthing
Cabling
Load on power points
The Environment
Paper
Consumables
Power
Environmental Conciousness
7. Security
Information Security
Information Security
Personal privacy
Company confidentiality
Protecting company information
Privacy Issues
Information stored on computers
Physical procedures
Software procedures
Vulnerability of data (Data Backup)
Implications of Theft
Computer Viruses
Types of Viruses
Spread of computer viruses
Virus Protection
8. Copyright and the Law
Copyright
Copyright
Copyright Issues
Licensing Issues
Data Protection Legislation