WHAT IS COMPUTER?
An electronic device (machine) that performs four basic operations: input, processing, output and storage.
CATEGORIES OF COMPUTER:
1.Supercomputers
2.Mainframes
3.Personal Computers
4.Mobile Computers and Devices
5. Embedded Computers
SUPERCOMPUTER
•A
supercomputer is the fastest, most powerful, most expensive computer
and
used
for very complex,
sophisticated job such as nuclear research, calculating
weather patterns, petroleum exploration, online banking, automotive design.
MAINFRAMES
•A
mainframe is a large, expensive, powerful computer that can handle hundreds or
thousands of connected users simultaneously (multi-user) and storing tremendous amounts of data, instructions and information.
•Mainframes
are often used in businesses that manage large amounts of data, for example,
insurance companies use mainframes to process information about millions of
policyholders.
PERSONAL COMPUTERS
•Personal
computer is a computer
that can perform all its input, processing, output and storage activities by
itself.
•Two
types of personal computers are desktop computers, and notebook computers
MOBILE COMPUTERS AND MOBILE DEVICES
•Mobile computer is a personal computer (that can perform all of its input, processing, output, and
storage activities by itself) that you can carry from place to
place
EMBEDDED COMPUTERS
•Special-purpose computer that
functions as a component in a larger product and perform various functions
depending on the product.
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APPLICATION OF IT
WHAT IS INFORMATION TECHNOLOGY (IT)?
IT is defined by the use of computer hardware and software to store, retrieve and manipulate information.
Here are some main applications of IT:
1. Education
2. Finance
3. Government
4. Health Care
5. Science
6. Publishing
7. Travel
8. Manufacturing
THE EXAMPLES OF APPLICATIONS OF IT
EDUCATION:
Course ware
Finance Investment System/Online Investing
IT is defined by the use of computer hardware and software to store, retrieve and manipulate information.
Here are some main applications of IT:
1. Education
2. Finance
3. Government
4. Health Care
5. Science
6. Publishing
7. Travel
8. Manufacturing
THE EXAMPLES OF APPLICATIONS OF IT
EDUCATION:
Course ware
Educational portal (e-portal)
Web based learning
Learning Management System
FINANCE:
Online banking
Finance Investment System/Online Investing
Electronic Payment System
GOVERNMENT:
myGovernment
e-Filling
e-Penyata Gaji & Laporan
HEALTHCARE:
Telemedicine
Telesurgery
Medline
SCIENCE:
A cochlear implant
An electrodes implant
A neural network
PUBLISHING:
Composing and enhancing songs
Filmmakers in creating and editing film
TRAVEL:
Navigation System by Global Positioning System (GPS)
Automatic roaming by Global System for Mobile Communication (GSM)
Online reservation
MANUFACTURING:
Computer-aided manufacturing (CAM)
Compute-aided design (CAD)
A Bar Code System
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