| 摘要 |
<p>PURPOSE:To alter the contents of a timing signal freely within a specific range through program operation, etc., and widen a use range by storing plural timing sequences in an ROM. CONSTITUTION:Plural timing sequences are stored in the ROM5. Consequently, a selection signal (g) for selecting some timing sequence is inputted from a CPU to an input terminal A11 of the ROM5 through an interface circuit (selecting circuit) 7 to select the necessary timing sequence. Then, data with high and low levels are read out seccessively according to addresses from a timing sequence selected by the output signal indicating the counted value of a counter 2 which counts a clock signal, and outputted as a timing signal K. Thus, the signal (f) inputted from the CPU to the ROM5 through the circuit 7 is varied to set plural kinds of signal K freely, widening the use range of a timing signal generating circuit.</p> |
