该学习板由CPU、LCD显示、RS232 串口及高精度A/D转换四部分组成，包含HT1621液晶程序和HX711，24位称重程序-The learning board by the CPU, LCD display, RS232 serial port and high-precision A/D conversion of four parts contains the HT1621 LCD program and HX711 24 weighing procedures