1. Application of Information Technology
1.1. Education
1.1.1. Learning Management System
1.1.2. Computer Based Training
1.2. Finance
1.2.1. Finance Investment System
1.2.2. Online Banking System
1.3. Government
1.3.1. E-filling
1.3.2. E-Syariah
1.4. Health Care
1.4.1. Medline
1.4.2. Counter Registration System
1.4.3. Telemedicine
1.4.4. Telesurgery
1.5. Science
1.5.1. Virtual reality
1.5.2. Cochlear implant
1.5.3. Hawk Eye Officiating System
1.5.4. Neural network
1.6. Publishing
1.6.1. Online Newspaper
1.6.2. Online Magazine
1.7. Travel
1.7.1. Global Positioning System
1.7.2. Online Reservation System
1.7.3. E-ticketing
1.8. Manufacturing
1.8.1. Computer-Aided Manufacturing
1.8.2. Manufacturing-Aided Design
2. Categories of Computer
2.1. Supercomputer
2.1.1. Fastest and most powerful computer
2.2. Mainframe
2.2.1. Can handle hundreds or thousands of connected user simultaneously
2.3. Super Computer
2.3.1. Can perform all of its input, processing, output and storage activity by itself
2.4. Mobile Computer
2.4.1. Can carry from place to place
2.5. Mobile Devices
2.5.1. Small enough to hold to your hand
2.6. Embedded Computers
2.6.1. Function as a component in a larger product
3. Advantages
3.1. Speed
3.1.1. Many computers can process billions or trillions of operations in a single second
3.2. Reliability
3.2.1. The electronic components in computers are dependable and reliable because they rarely to break
3.3. Communication
3.3.1. Computers can communicate wirelessly with other computer and allow users to communicate with one another
3.4. Consistency
3.4.1. A computer with same input will produce the same results consistently
3.5. Storage
3.5.1. Computers can store enormous amounts of data and make this data available for processing anytime is needed
4. Disadvantages
4.1. Violation of privacy
4.1.1. Other person might steal our personal and confidential records if they were not protected properly
4.2. Public safety
4.2.1. We might be a victim to crime if we expossing or sharing out photos, videos or other personal information publicly
4.3. Impact on labour force
4.3.1. Many employee might jobless if their skills have been replaced by computers
4.4. Health risk
4.4.1. Prolonged or improprer computer use can lead to health injuries
4.5. Impact on environment
4.5.1. Computer manufacturing process and computer waste can cause pollution