Components of Computer

1. Input Devices

The data or instruction give to the computer is called input. A hardware component used to enter data and instruction into computer is called input device. Most commonly used input devices are Keyboard, Mouse, Microphone, Scanner, PC camera and digital camera.

2. Output Devices

The data Processed into useful information is called output. A hardware component used to display information to the user is called output device. Most commonly used output devices are monitor, printer and speaker.

3. System Unit

System unit is a box  that contains different electronic components of computer system. All computer system have a system unit. The electronic components in the system unit are connected to motherboard. Motherboard is also called system board or  main board. The system unit board is the communication medium for the entire computer system. Important components of system unit are CPU and Memory.

4. Storage Devices

The hardware components used to store data, Instructions and Information permanently are called storage devices. It is called nonvolatile because it contents remain save when the computer is turn off. Some important storage devices are floppy disk drive, zip drive, hard disk drive CD-ROM drive CD-RW drive, DVD-ROM drive etc.

5. Communication Devices

The hardware components used to communicate and exchange data, Instructions and information with other computers are called communication devices. An important communication Device is called modem. It enables the computer to communicate with others computers via telephone line or cable.