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Subject: Re: Can I have a schematic diagram of simple electric counter?

Date: 10/11/03 at 8:26 PM
Posted by: Russ Kincaid
E-mail: russlk-nospam[AT55]yahoo.com (replace [AT55] with @ to reply)
Message Posted:

In Reply to: Can I have a schematic diagram of simple electric counter? posted by Steven Choi on 10/10/03 at 11:01 AM:

The CD40110B CMOS IC will drive a 7-segment display. It counts up or down, see the Texas Instruments data sheet. You will need a resistor in series with each of the letter outputs to limit the current to a LED display. The push button will be the clock input but you will need an R-C debounce circuit to prevent multiple counts. The R*C time constant should not be more than 5 microseconds.


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