I am thinking about making a no-microcontroller clock/timer/stopwatch (74 series ICs only + passive components, preferably). To make it as simple as possible I want to have a 1Hz clock as the basis for the system. Any ideas on how to get an accurate 1Hz clock? I was thinking of either using a 555 t…

1hz clock

system May 24, 2011, 12:58am 4

I'd rather not... I'd also like it to be standalone, powered off a 9V battery perhaps?

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