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TOPIC 1: INFORMATION TECHNOLOGY by Mind Map: TOPIC 1:
INFORMATION
TECHNOLOGY
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TOPIC 1: INFORMATION TECHNOLOGY

5) Cloud Computing

- An INTERNET SERVICE that provides COMPUTING NEEDS to computer users.

Platform as a Service (PaaS)

Infrastructure as a Service (IaaS)

Software as a Service (SaaS)

-reduced cost; pay for what we ware using

-easy reallocation of resources

-security; no control over data

-no privacy

Definition:

- The use of computer hardware & software to store, retrieve and manipulate information.

The Importance of IT:

-Speed and accuracy

-Global social interaction

-Entertainment

-Communication

-Education

-Economic advancement

Application of IT

1) Education

e-learning

2) Finance

online banking

3) Government

e-Syariah

4) Health care

medline

5) Science

neural network

6) Publishing

e-Magazine

7) Travel

Global Positioning System (GPS)

8) Manufacture

Computer Aided Manufacture (CAD)

Development of IT

1) Stand-alone Computer

- A desktop/laptop computer that is used on its own without requiring a connection to a Network (LAN, WAN).

Example of Operating System: - Windows 7 - UNIX - LINUX - Mac OS X

2) Mainframe

- A large, expensive, powerful computer that can handle hudreds/thousands of connected users simultaneously.

-lots of processes, memory & channels.

-enormous throughput

-super reliable

-environment requirements

-power requirements

3) Client-server Network

- CLIENT is the REQUESTING MACHINE and the SERVER is the SUPPLYING MACHINE both of which are CONNECTED via a LAN or WAN.

-client can be easily added/replaced

-secure

-expensive to implement and maintain

-requires experienced network personnel to maintain the server

4) Distributed Computing

- A single computer PROGRAM runs in MORE THAN ONE computer AT THE SAME TIME.

-speed, reliability, incremental growth

-networking, security, software