PURPOSE: To execute fine and coarse adjustment for the movement of a cursor properly by allowing a user to set up the ratio of the moving variable of the cursor to that of a mouse only by the combining operation of selecting switches.
CONSTITUTION: In case of the inner processing of the mouse, pulse signals of A and B phases are generated from the mouse. The A-phase pulse and the B-phase pulse are applied to an FF-F 3 and FFs-F 4 , F 5 respectively and the moving variable and moving direction of the X direction are outputted from terminals C, B respectively. The moving variable and moving direction outputs of the Y direction are also constituted similarly and the moving direction of the Y direction is outputted from the terminal B. Outputs of the 1/2, 1/4 and 1/8 frequency of the A-phase pulse are applied from terminals QA, QB, QC of a counter CX to terminals C 3 WC 0 of a multiplexer MPX1. An X direction moving variable output from the MPX1 selects and outputs the frequency-divided outputs of the terminals C 0 WC 3 in the alternative way by the combination status of the outputs S, T of the FFs-F 1 , F 2 for detecting the setting status of switches SW 1 WSW 3 . The Y direction moving variable output also executes similar operation.