Keyboard apparatus and data communication method using the same

The data communication method using the keyboard device and it is disclosed. Data communication method of a keyboard apparatus according to the present invention, the keyboard apparatus is a step, data to the keyboard apparatus is a generator for generating a command set of the data the computer is executed by using the key input signal generated when the key input to the computer transmitting by said computer to execute commands of the data, and comprising the step of receiving the results of the above keyboard apparatus executing a command of the data from the computer, the command data is the computer to the keyboard device including line coding (coding line) transfer method, and the computer is caused to correspond to the toggle signal on the line coding method transmitted to the keyboard device.