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条件计时器是一种能对环境出现某种状态的时间进行自动累计的仪器。用电子表改装成这种计时器的原理很简单,因电子表主要由大规模集成块组成,如在表正常工作的情况下用导线将电子表的谐振电容短路,此时晶振停止工作,但表所记忆的时间却储存在表内,当撤去短路线,电子表将在原记忆时间的基础上继续计时。利用这一特性,再配置外围电路即可完成条件计时器的功能。但对不具备上述特性
Condition A timer is an instrument that automatically accumulates the time when a certain state of the environment occurs. Using electronic timepieces modified into such a timer principle is very simple, because the electronic form is mainly composed of large-scale integrated blocks, such as the table under normal working conditions with a wire to the resonant capacitance of the electronic watch short circuit, then the crystal stop working, but The memory of the time table is stored in the table, when removed short circuit, the electronic watch will be based on the original memory time to continue timing. Use this feature, and then configure the peripheral circuit to complete the conditions of the timer function. But do not have the above characteristics