51单片机定时器的计数周期

51单片机定时器的计数周期是根据机器周期和定时器的计数值来确定的。机器周期是单片机完成一个操作的最短时间，每个机器周期都是每条语句的整数倍。而定时器的计数周期是通过对内部机器脉冲进行计数，计数值乘以机器周期来得到的。例如，如果机器周期为1微秒，计数1000次，则定时器的计数周期为1毫秒。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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