Technology - Infrastructure - Key Concepts

Synopsis

The basic principles of analogue audio/video and digital communication systems are discussed. Modulation systems, data compression, radio frequency propagation and communications and software operation using the 7 layer OSI protocol stack and the 5 layer Internet protocol model are introduced. The trends in communication technologies and the importance of the Internet are discussed in order to provide a basis for understanding the many communication and computing technologies.

1. Synopsis
2. Communication, signals and data
- 2.1 Light and sound
- 2.2 Analogue electronics
- 2.3 Digital conversion
  - 2.3.1 Frequency limits
- 2.4 Binary numbers
  - 2.4.1 Hexadecimal and dotted quad representations
- 2.5 ASCII text
  - 2.5.1 Unicode character sets
  - 2.5.2 Hypertext Markup Language (HTML)
- 2.6 Data storage and compression
3. The pace of electronic technology development
4. Types of communication system
- 4.1 Basic communication principles
- 4.2 Basic characteristics of communication technologies
- 4.3 Analogue and digital
  - 4.3.1 GSM example
  - 4.3.2 PC example
- 4.4 Analogue versus digital
5. The OSI layered model of networks and applications
- 5.1 Distributed information system
- 5.2 Purpose of OSI
- 5.3 Functions and examples
- 5.4 How the model works
6. The 5 Layer Internet Protocol Model
- 6.1 Physical Layer 1
- 6.2 Data Link Layer 2
- 6.3 Network Layer 3
- 6.4 Transport Layer 4
- 6.5 Application Layer 5
7. The increasing importance of the Internet
- 7.1 From smoke signals to Internet
- 7.2 New foundation for future systems
  - 7.2.1 Simplicity of the network
  - 7.2.2 Multicasting and QoS add complexity to the network
- 7.3 The importance of the Internet
8. Related reports

Exhibit 1 – OSI layered model: a web-browsing example

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Number of pages: 17

Status: Archived

Last update: 04 May 2008
View update history

Author: Robin Whittle

NOTE: This report has been archived

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