系统以单片机AT89C2051为核心，完成时间显示，小型直流电机的转速测定及控制，采用字符型液晶显示器1602（HD44780控制）显示时间及转速；

同时系统可完成对电机的开关控制，系统工作时间，当前时间及电机状态的显示。时间可由用户通过按键修改及设定。电机转速可由电位器调压控制。-System to single-chip AT89C2051 as the core, the completion of time has shown that small DC motor speed measurement and control, the use of character liquid crystal display 1602 (HD44780 control) shows the time and speed　to be completed at the same time the system switches on the motor control system of working hours , the current time and the electrical state of the display. Time by the user through the key changes and settings. Motor speed control by potentiometer regulator.