Keyboard is an instruction and data input device used to operate computer equipment, and also refers to a set of function keys arranged by the system to operate a machine or equipment (such as a typewriter, computer keyboard). The keyboard is also a part of the keyboard instrument, and can also refer to the instrument that uses the keyboard, such as the piano, digital piano or electronic organ, and the keyboard helps to practice typing.

Keyboard is the most commonly used and the most important input device, through the keyboard can be English letters, Chinese characters, numbers, punctuation and other input to the computer, so as to issue commands to the computer, input data and so on. There are also keyboards with various shortcuts. With the passing of time, gradually there are independent products with various quick functions sold separately on the market, and with special driver and setting software, and personalized operation can be achieved on the compatible machine.