1. Applications of information technology
1.1. Education
1.1.1. Learning management system
1.1.2. Computer-based training
1.2. Finance
1.2.1. Online banking
1.2.2. Finance investment system
1.3. Government
1.3.1. HRMIS
1.3.2. e-Filing
1.3.3. e-Syariah
1.4. Health care
1.4.1. Medline
1.4.2. Counter registration system
1.4.3. Telemedicine
1.5. Science
1.5.1. Virtual reality
1.5.2. Hawk-eye officiating system
1.6. Publishing
1.6.1. Online newspaper/Online magazine
1.6.2. Online photo/Card printing
1.7. Travel
1.7.1. GPS
1.7.2. Automatic roaming system
1.7.3. Online reservation system
1.8. Manufacturing
1.8.1. CAD
1.8.2. CAM
2. Categories of computers
2.1. Supercomputers
2.1.1. faster and most powerful computer that capable to process more than one quadrillion instructions in a single second
2.2. Mainframes
2.2.1. large, and powerful computer that can connect thousands of users simultaneously
2.3. Personal computers
2.3.1. computer that can perform all of its input, process, output and srorage activities by itself
2.4. Mobile computers
2.4.1. personal computer you can carry from place to place
2.5. Mobile devices
2.5.1. computing device small enough to hold in your hand
2.6. Embedded computers
2.6.1. special-purpose computer that functions as a component in a larger product
3. Information technology
3.1. The use of computer hardware and software to store, retrieve and manipulate information.
4. Disadvantages of information technology
4.1. Health risks
4.1.1. prolonged and improper use of computer can lead to injuries
4.2. Violation of privacy
4.2.1. user's privacy will be violated if personal records are not protected properly
4.3. Public safety
4.3.1. user's personal information can be used by syndicate to commit crime
4.4. Impact on labour force
4.4.1. computers have replaced many workers to improve productivity
4.5. Impact on environment
4.5.1. computer waste and manufacturing process have contaminated the environment
5. Advantages of information technology
5.1. Speed
5.1.1. can process more than one quadrillion instructions in a single second
5.2. Reliability
5.2.1. electronic components rarely break
5.3. Consistency
5.3.1. same input will produce same result
5.4. Storage
5.4.1. can store enormous amount of data
5.5. Communication
5.5.1. can communicate with other person easily