Simplest way to build a stopwatch (max 59 minutes and 59 seconds i.e, 59:59) without coding or programmable ics? Answered
I am trying to make a stopwatch that counts from 1 second to 59 minutes. Almost all the circuits that I've seen involves some kind of coding or programmable ics. But I don't want that. I'll be using a quartz crystal as my 1 Hz base and 4 individual 7 segment displays ( 2 for seconds and 2 for minutes). I know how to use decade counters to count till 60 seconds but I need help for turning 60 seconds to 1 minute and reset the 7 segments that represent seconds. In a nutshell, I would like to know how to change 00:59 to 01:00.
A counter that updates after every six "inputs" could solve everything. A link to a a circuit diagram would be helpful too.