一种多功能频率计，由门电路和单片机实现，0.1-10M的信号频率测量，效果理想！-A multifunctional Cymometer from gate circuit and ,0.1-10M single-chip realization of the signal frequency measurement, the results are satisfactory!

用普通单片机实现极简单的测温电路(原创)-RC

一款单片机常用复位电路的datasheet，即有中文版，又包含有英文版.-A microcontroller used reset circuit datasheet that the Chinese version and English.