What are they for?

I want to talk about the output and input devices of PC:

Keyboard.









You can input dates with keyboard.

Mouse.










A mouse is used to move the cursor rapidly.

Scanner.











Using Scanner you can introduce documents in pc.

Joystick.












Joysticks are used in many games to control the game screen.

Microphone.











You use a microphone to speak with other people arround the world with your computer.