AT89C2051单片机控制电机驱动器，可以实现细分数的切换-AT89C2051 single-chip motor driver control, you can achieve breakdown of the number of switching

是用51单片机AT89C2051+18B20做的高精度温度计，下载下来就可以正常使用-With 51 microcontroller AT89C2051+ 18B20 do precision thermometer, you can normally use downloaded