Computer Hardware
Input~Output
Input
an input device allows you to put data into a computer {for example... keyboard, mouse, digital camera, touchscreen and a microphone} Input only work with digital information. Any input that a computer receives must be digitised and if it isn't then it wont be able to understand the information.
Output
Output is something that comes out of a machine. {For example...Printer, speakers, projector, monitor and headphones
printer
A printer is an output because your computer sends the printer some information and it prints it out.
Keyboard
A keyboard is an input device because you have to type the information into the keyboard.
Speakers
A speaker is an output device because (for example...plugging it into your phone) The phone sends the speaker information about the song and it sends sound out the speaker.