A keyboard device coupled to an electronic device includes a board, a control panel, and a sound device. The control panel coupled to the board for inputting an operating command further includes a first touch screen, a second touch screen, and a touch pad. The first touch screen can provide one of a handwriting input, a key input and a drawing input to the board as the operating command, the second touch screen can provide a number input to the board as the operating command, and the touch pad can provide a cursor control input to the board as the operating command. The sound device coupled to the board makes a sound based on the operating command received by the board.