Introduction - If you have any usage issues, please Google them yourself
PIC16887A MCU by dialing code disc SW1 select AD channel, three-dial switch DSW1 select AD results of alignment and the reference voltage (Vref+) and (Vref-), AD results in the C port and D port on the LED directly to show that if there is an error In RB7 the LED display, and the C port on the display appropriate error message.