[time-nuts] HP 5245L Question

paul swed paulswedb at gmail.com
Sat Jan 9 23:27:47 UTC 2010


For easy tinkering use the msd to play with its the slowest counter
Suggest 74ls90 decade divider, feeding 74ls75 quad latch, to a 7447 7 seg
decoder.
You should have an inverter as I am unsure which way the transfer pulse will
need to be.
Only other potential issue is the count pulse level and polarity into the
board.

On Sat, Jan 9, 2010 at 6:05 PM, <g4gjl at btopenworld.com> wrote:

> Thanks, Burt and Paul. Ill have a re-think about how to do a TTL and LED
> replacement..One digit at first as an experiment. Thanks for your
> encouragement!
> Time to get the 5245 manual out!
>
> Pete
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