Abstract: An integrated mouse and the keyboard device comprises a hand-held part having 5 buttons for hand holding; a moving part which can detect the rotation angle and moving range of user's palm; a stationary part placed under the user's forearm; a circuitry to convert the status of the said buttons, the rotation angle and moving range of the said moving part into electric signals; and an output control unit to convert the said electric signals received from the said circuitry into keyboard typing, mouse movement, or mouse button clicking signals, and then pass the said signals to the computer. This design enables the user to harness the cursor and the keyboard as freely as he wishes without having to change his usual habit, no matter he is in a sitting, standing, or lying position.