computer

1. software

1.1. "

1.1.1. operating system

1.1.2. utility program

1.2. appilcation software

1.3. installing

1.4. New node

1.5. New node

2. categories

2.1. presonal computer

2.2. mobile computer and mobile device

2.2.1. notebook computer

2.2.2. tablet PC

2.2.3. smart phone

2.2.4. PDA

2.2.5. handheld computer

2.2.6. portable media player

2.2.7. digital camera

2.3. game consoles

2.4. servers

2.5. mainframes

2.6. supercomputers

2.7. Embedded computer

3. Network and internet

3.1. Network

3.2. the internet

3.2.1. communicate

3.2.2. Reserch and access information

3.2.3. shop

3.2.4. bank and invest

3.2.5. online trading

3.2.6. entertainment

3.2.7. Download music

3.2.8. share video

3.2.9. web appilcation

3.3. social networking

4. components

4.1. input device

4.2. output device

4.3. system unit

4.4. storage device

4.4.1. New node

4.5. communications device

5. application in society

5.1. Education

5.2. Finance

5.3. Government

5.4. health care

5.5. science

5.6. publishing

5.7. travel

5.8. manufacturing

6. using of computer

6.1. advantage

6.1.1. speed

6.1.2. reliability

6.1.3. consistency

6.1.4. storage

6.1.5. communication

6.2. disadvantages

6.2.1. health risk

6.2.2. Violation of privacy

6.2.3. public safty

6.2.4. impact of labor force

6.2.5. impact of Enviroment

6.3. Green computer