基于压力传感器的51单片机编程，ADC采用HX711，利用矩阵键盘实现去皮、单价设定、单价保存（写入24c8中）、单价载入等功能。- Based on 51 SCM pressure sensor, ADC uses HX711, use a keyboard matrix peeled, price setting, price save (write 24c8), the unit price loading and other functions.