Introduction - If you have any usage issues, please Google them yourself
3 BCD code count display circuit. BCD code counting circuit count from 0 to 9 and then back to 0 from the new count. 3 BCD code counter can be achieved from 0 to 999 decimal count. Counting process with seven segment displays to LED digital tube displays, where dynamic time-sharing digital bus switch circuit to scan, followed by time-sharing of digital output selected for a count of ten, hundred bits of data.