Components of the computer

1. Input Unit

1.1. Mouse

1.2. Keyboard

1.3. Scanner

1.4. Webcam

1.5. Microphone

1.6. Finger scan

2. Output Unit

2.1. Printer

2.2. Monitor

2.3. LCD Projector

2.4. Speaker

2.5. Plotter

3. Central Processing Unit

3.1. CPU

4. Memory Unit

4.1. RAM: Random Access Memory

4.2. ROM: Read Only Memory

4.3. Hard Disk