Computer keyboard is a text message to a control channel information entered into the computer, typewriter keyboard evolved from the English, when it first appeared on the computer, when based on a technique called "teletype" parts of the image appears. Mouse: is the abbreviation of computer input devices, sub both wired and wireless. Computer display system is an indicator of vertical and horizontal positioning coordinates, so named because of the shape of the mouse "Mouse" (RTHK as a mouse). "Mouse" standard should be called "mouse", the English name "Mouse". Use the mouse to make the computer easier to use, instead of the keyboard that tedious instructions.