Introduction - If you have any usage issues, please Google them yourself
Resources include proteus simulation diagram, C language program code and compiled hex file, test available.
Interrupt mode, the 2 ~ 0 ~ 5V analog voltage cycle collection, collected data sent to LED display, and stored in memory. Over limit indicator light flashing.
Is essentially a microcontroller for the controller, ADC0809 for the ADC device AD conversion circuit, the design requirements of the voltage display, ADC acquisition of the signal is further processed.