A computer

1. Advantages of using computer

1.1. speed

1.2. Reliability

1.3. Consistency

1.4. Storage

1.5. Communications

2. Disadvantages of using computer

2.1. Health risks

2.2. Violation of privacy

2.3. Public safety

2.4. Impact on Labor Force

2.5. Impact on Environment

3. Categories of computers

3.1. Personal computer

3.2. Mobile computer and mobile devices

3.3. Game consoles

3.4. Severs

3.5. Mainframes

3.6. Supercomputer

3.7. Embedded computers

4. what is a computer

4.1. A computer is an electronic device, operating under the control of instructions stored in its own memory

5. The component of a computer

5.1. hardware

5.1.1. input device

5.1.2. output device

5.1.3. system unit

5.1.4. storage device

5.1.5. communication device

5.2. software

5.2.1. Software, also called a program, tells the computer what tasks to perform and how to perform them

5.3. The Internet and network

5.3.1. The internet is a worldwide collection of networks that connets millionsof businesses,goverment agencies,educational institutions and individuals

5.3.2. A network is a collection of computer and devices connected together,ofen wirelessly,via communication device and transmission

6. Computer applications in society

6.1. Education

6.2. Finance

6.3. Government

6.4. Healh care

6.5. Science

6.6. Publishing

6.7. Travel

6.8. Manufacturing