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That old down counter again
Remember that 4-digit down counter kit that was selling a long time ago down-under? seems it's available from a US source called Circuit Specialists for like $19.95 these days, even has the same PDF file with it.
It was cool because it had an output so you could trigger a shut-off when the count was reached.
http://www.circuitspecialists.com/prod.itml/icOid/4103
It was cool because it had an output so you could trigger a shut-off when the count was reached.
http://www.circuitspecialists.com/prod.itml/icOid/4103
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