DIGITAL SWITCH

摘要

PURPOSE:To rewrite the set value in an extremely easy way by using the data given from a CPU to rewrite the set value of a reversible presetting counter. CONSTITUTION:The data signal given from a CPU 35 incorporated to an external controller is written to a reversible presetting counter 15 via an input/output circuit 17. The circuit 17 is set under an input state by the chip selection, writing and reading signals of an input/output control circuit 19. The data signal of the circuit 17 is supplied to the counter 15 by the writing signal and also to a latch circuit 20 and held there. Then these data signals drive a digital display device 4 and a state display device 14 through a display drive circuit 16.