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Subject: Re: I need schematic for clock - please help please!

Date: 02/22/03 at 10:48 PM
Posted by: sicminds
E-mail: sicminds@attbi.com
Message Posted:

In Reply to: Re: I need schematic for clock - please help please! posted by Russ Kincaid on 02/22/03 at 10:03 PM:

The following is more in depth with what i need help on.

A digital clock that counts from 0-59 and then resets to 00 and then starts counting again. It will be clocked by a 60hz ttL compatible square wave. I need it to be contect to a slide switch so it will stop the clock when switched and then when it is switched back have to start again from where it left off.

These are the parts that are allowed.

7400
7404
7408
7446/7447
7474
7476
7493/74293
150ohm resitor pack
7 segment LED display

Please help me on this


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