Computer

1. Network

1.1. Server

1.2. Internet

1.2.1. E-mail

1.2.2. WWW

2. Advantage

2.1. Reliability

2.2. Communication

2.3. Consistency

3. Hardware

3.1. Storage Device

3.1.1. Hard disk Drive

3.1.1.1. C Drive

3.1.1.1.1. File & Folder

3.1.2. RAM

3.1.3. ROM

3.2. Input Device

3.2.1. Mouse

3.2.2. Keyboard

3.2.3. MICR

3.3. Output Device

3.3.1. Monitor

3.3.2. Printer

3.3.3. Speaker

3.4. Processing Device

3.4.1. CPU

4. Software

4.1. Operating System

4.1.1. Program

5. Disadvantage

5.1. Health Risk

5.2. Violation of Privacy

5.3. Public Safety