说明：  本计时系统主要有两个模块：综合计时电路、调整控制电路。显示部分电路未给出设计图，其中综合计时电路用于完成各种计时的功能，调整控制电路用于调整计时系统的有关参数
(The timing system has two main modules: integrated timing circuit to adjust the control circuit. Shows part of the circuit design is not given, of which integrated time circuit for the completion of the function of various timing, adjust the control circuit used to adjust the timing system of the relevant parameters)