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mabey you could help

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sparkyIVXX

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i am trying to figure out how to count by multiples of 5, 10, 25, with the 7490, used with the 7447 BCD to seven seg.
 
Maybe you could make a bistable with an output for a No 5
and an output for a No 0,
on the lsd,
then run the counter from it
to run the rest as normal.

Best of luck with it, John :)
 
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