1. Define
1.1. The use of computer hardware & software to store, retrieve & manipulate information
2. Applications of IT
2.1. Education
2.1.1. Learning Management System
2.1.2. Computer Based Training
2.2. Finance
2.2.1. Finance Investment System
2.2.2. Online Banking System
2.3. Government
2.3.1. E-filing
2.3.2. E-Syariah
2.3.3. HRMIS
2.4. Health care
2.4.1. Medline
2.4.2. Counter Registration System
2.4.3. Telemedicine
2.4.4. Telesurgery
2.5. Science
2.5.1. Virtual reality
2.5.2. Cochlear implant
2.5.3. Hawk Eye Officiating System
2.5.4. Neutral network
2.6. Publishing
2.6.1. Online Newspaper & Online Magazine
2.7. Travel
2.7.1. GPS
2.7.2. Online Reservation System
2.7.3. E-ticketing
2.8. Manufacturing
2.8.1. Computer-Aided Design
2.8.2. Computer Aided Manufacturing
3. Advantages
3.1. Allow users to communicate with one another easily
3.2. Can do multitasking of operations in a single second
3.3. Can store large amounts of data
4. Disadvantages
4.1. many employee might jobless because their skills have been replaced by computers
4.2. cause back pain because use for long period time
4.3. lead to violation of privacy if data was not protected properly
5. Categories of Computers
5.1. Supercomputer
5.1.1. Fastest & most powerful. capable to process more than one quadrillion instructions in a single second
5.1.2. SIZE- Extremely large in a full room of equipment
5.2. Mainframe
5.2.1. Large & expensive. Can handle hundreds/thousands of connected user simultaneously.
5.2.2. SIZE- Large in partial room to a full room of equipment
5.3. Personal Computer
5.3.1. Computer that can perform all of its input, processing,output & storage activity by itself.
5.3.2. SIZE- Fits on a desk
5.4. Mobile Computer
5.4.1. Personal computer that can carry from place to place
5.4.2. SIZE- Fits on lap/ in hand
5.5. Mobile Devices
5.5.1. Computing device small enough to hold in hand
5.5.2. SIZE- Fits in the palm of hand /pocket size
5.6. Embedded Computers
5.6.1. Special purpose computer that is function as component in a larger product
5.6.2. SIZE- Miniature