以单片机为主控制器，开发一个液位监控系统，可测量并显示液位高度。设定最高液位和最低液位，当液位高于最高液位或低于最低液位时发出报警信号。-Microcontroller-based controller, the development of a level monitoring system to measure and display the liquid level. Set a maximum level and minimum level, an alarm signal when the level is above the maximum level or below the minimum level.