说明：  利用单片机的计数器来制作简易分频计，因为P1^0用来模拟外界波形输入，它提供周期为100ms的方波。与T1管脚相连后，T1可对其进行周期计数。 程序中的变量TL1决定着分频系数，其值乘以2即为分频系数。 改变其值可以得到相应的分频输出波形（方波）。 P1^1为输出管脚，将其连接示波器可以看到分频后的波形。
(To make use of simple single-chip counter frequency meter, because P1 ^ 0 input waveforms used to simulate the outside world, it provides a period of 100ms square wave. After the pin is connected to T1, T1 can be cycle counted. TL1 variables in the program determines the frequency factor is multiplied by 2 is the frequency factor. Change its value can be divided by the corresponding output waveform (square wave). P1 ^ 1 for the output pin, connect the oscilloscope to see the waveform divided.)