Input and output devices

A digital computer can only understand binary codes (digital data). The information that human understands must first be converted into digital codes (i.e. combination of 1’s and 0’s) before it is fed to the digital computer to process. The devices, which convert human readable data into machine-readable form, are known as input device. Examples of such devices are: Keyboard, mouse, joystick etc.

After processing a digital computer gives the processed output in the digital form. These outputs are very hard for human beings to comprehend. To convert these machine outputs into human readable form output devices are used. Examples of such output devices are: monitor, printer etc.

Types of Input Devices:

• Scanner
• Touch Screen
• Light pen
• Joystick
• Trackballs
• Mouse
• Keyboard

Types of Output Devices:

• Printers
• Plotter
• Monitor
• Speaker                        and many other.