With 40 of the versatile timer chips in a build, you might just get something completely unexpected, like this 555-based eight-bit digital counter. This one comes to us by way of [Astronomermike ...

BCD / Decade Counter A Binary Coded Decimal (BCD) counter produces counting sequence from 0 to 9 for an UP counter, and from 9 to 0 for a DOWN counter. This type of counter is also known as a decade ...

In this project a counter is designed to count from 0 to 99, and the display is refreshed every 5ms inside the timer interrupt service routine. The main program can then perform other tasks, in this ...