WHAT IS A COMPUTER KEYBOARD
For other types of keyboards, see Keyboard (disambiguation) . A computer keyboard is an input device that allows a person to enter letters , numbers , and other symbols (these are called characters in a keyboard) into a computer . It is one of the most used input devices for computers. Using a keyboard to enter lots of data is called typing . A QWERTY computer keyboard in US layout. A keyboard contains many mechanical switches or push-buttons called "keys". When one of these are pushed, an electrical circuit is closed, and the keyboard sends a signal to the computer that tells it what letter, number or symbol it would like to be shown on the screen . The computer's CPU then shows the character on the screen, usually at the place where the cursor is. Besides entering characters, computer keyboard...