MOUSE

PURPOSE:To minimize the degree of fatigue of a user and to improve the operability by taking out a variation of depressing pressure or a depressing stroke applied to a button switch as a digital signal of plural bits. CONSTITUTION:When the left button switch 6A is depressed, depressing pressure is applied to pressure sensitive conductive rubber 13A through a slider 10A, a depressing spring 11A and a depressing body 12A, and the resistance value of the pressure sensitive conductive rubber 13A is varied. As a result, a voltage corresponding to the depressing pressure can be obtained in the other end of a resistance 17A, that is, the input terminal of an A/D converting circuit 18A. Also, the A/D converting circuit 18A converts a voltage value obtained by a depressing pressure detecting means 23A to digital signals B0-B2 of a 3-bit binary format, that is, divides the voltage value into eight pieces of levels, and transfers it to a control part 19. In such a way, the degree of fatigue of a user can be minimized, and also, the operability can be improved.