| 摘要 |
PURPOSE:To improve the profitablility and the flexibility of the title circuit by enabling a pulse generation cycle to be changed with the aid of the control of software and simultaneously enabling time from the demand time of a demand originator until a first pulse is generated to be actually disregarded. CONSTITUTION:The timer pulse generation and distribution circuit of an alternate long and shor dash line part is constituted by a scanning circuit SCN, a pulse signal supply circuit SD, a processor CPU, a main memory MM, a clock circuit CLOCK and a timer T. Then, that is actually no problem because one cycle that the pulse is supplied to plural output trunks OGT is finished every 100(ms). Besides, by optionally rewriting the fixed number 1800 of a counter memory in the software. the cycle of the pulse generation can be changed form 3 minutes to the other cycle. Thus, hardware can be prevented from being cost up and an user can easily change the pulse cycle. |
