1. Disadvantage
1.1. Impact on labour force
1.1.1. Employee might jobless if their skills havebeen replaced by computers.
1.2. Health risk
1.2.1. Computer addiction and technology over load.
1.3. Impact on enviroment
1.3.1. Manufacturing process and computer waste can cause pollution.
2. Applications
2.1. Education
2.1.1. Learning manement System
2.1.1.1. Help student can get their lecture note and answer quizzes
2.2. Finance
2.2.1. Online banking system
2.2.1.1. Can transfer money to another bank.
2.3. Publishing
2.3.1. Online Newspaper & Online Magazine
2.3.1.1. Allow user to get information easily.
2.4. Government
2.4.1. E-filing
2.4.1.1. Online system fof declaring tax
2.5. Health Care
2.5.1. Medline
2.5.1.1. Web site provide up-to-date medical fitness or ecercise information.
2.6. Science
2.6.1. Cochlear implant
2.6.1.1. Computer technology to help user in hearing problem
2.7. Travel
2.7.1. E-ticketing
2.7.1.1. Online booking ticket
2.8. Manufacturing
2.8.1. Computer-Aided Design
2.8.1.1. To increase designer productivity and design quality.
3. Categories of Computer
3.1. Supercomputer
3.1.1. Fasters and most powerful computer. Capable to process more than one quadrillion in a single second.
3.2. Mainframe
3.2.1. Large and powerful computer. Can handle hundreds or thousands of connected user simulataneously.
3.3. Personal Computer
3.3.1. Can perform all of its input, processing, output and storage activity by itself
3.4. Mobile Computer and Devices
3.4.1. Mobile computer - Personal computer you can carry from place to place.
3.4.2. Mobile Devices - Compuer device small enough to hold in your hand.
3.5. Embedded Computers
3.5.1. Special purpose computer that is function as compenent in alarger prodect.