In troduction to Computer

1. Hard ware

1.1. Input Device

1.1.1. scanner

1.1.2. Key board

1.1.3. mouse

1.1.4. microphone

1.1.5. Web cam

1.2. Output Device

1.2.1. monitor

1.2.2. printer

1.2.3. speakers

1.3. System Unit

1.4. Storage Device

1.4.1. CD

1.4.2. modem

1.4.3. USB

1.4.4. card reader/ writer

1.4.5. memory card

1.4.6. DVD

1.5. Communications Device

1.5.1. telephone lines

1.5.2. Cellular radio

1.5.3. Satellils

1.5.4. transmission media

2. Software

2.1. Application Software

2.1.1. Health Care

2.1.2. Science

2.1.3. Education

2.1.4. Finance

2.1.5. Publishing

2.1.6. Travel

2.1.7. Manufacturing

2.1.8. Government

2.2. System Software

2.2.1. Operating System

2.2.2. Utillity program