一个用51单片机控制直流电机的程序，可用按键控制速度增加或减少！还可制动！-A DC motor with 51 single-chip control procedures, key control can increase or decrease the speed! Can brake!

89C51单片机控制直流电机的正反转，驱动芯片是L298，用两个按键控制电机的旋转方向。-89C51 microcontroller controlled DC motor reversing, the driver IC is L298, with two buttons control the direction of motor rotation.

通过不同的按键控制单片机的输出pwm信号的不同来实现对直流电机的pwm调速处理。-Through the different button control the output of the single chip microcomputer PWM signal to achieve different dc motor of the PWM control processing.

51单片机控制的液位控制程序： 包括按键输入，电机和数码屏显示控制。带AD采集模块，步进电机控制芯片ULN2003等-51 single-chip microcomputer to control the liquid level control program: Includes key input, motor and digital on screen display control. With AD acquisition module, stepper motor con