Abstract: Provided is a wired or wireless mouse, one of peripheral devices of a computer. The mouse is capable of installing a built-in microphone in the mouse without a design change of a mouse surface, outputting a voice signal from the microphone to a soundcard of a computer through a separate output line different from an output line of the mouse, removing noise generated when a voice signal is output during operation of the mouse, transmitting the voice signal to the computer through the microphone even while an application program is executed in the computer through the mouse, and improving sensitivity of the voice signal input into the computer.