An input device is an equipment or hardware device which is used to send information to a PC. An input device enables clients to impart and feed directions and information to PCs for processing, display, storage and as well as transmission.
Examples of input devices are;
Keyboard
mouse
microphone
An output device is any device used to send information from a PC to another device or client. Most PC information output that is intended for people is as sound or video.
Examples of input devices are;
Projectors
Speakers
Earphones
printers