[Entry] CMOS Frequency Counter

[Entry] CMOS Frequency Counter

Postby miguelpedroso » Sat Oct 27, 2012 2:35 pm

Hello!

I just finished my CMOS frequency counter. I only heard about this contest 2 weeks ago so after a lot of work, here are the results. :)

Learn more here: http://miguelpedroso.com/?p=714
Video: http://www.youtube.com/watch?v=DbCAFuYB ... ture=g-u-u

I’ve wanted to create a frequency counter using logic chips for some time, but I never really got the chance to do it, mainly because nowadays there are micro-controllers that one can use in replacement of all these old chips. I heard of the 7400 Contest only 2 weeks ago and thought that it was the perfect excuse for me do build this machine!

The project consists of a frequency counter that uses only old-school CMOS chips: 4511 display drivers, 4029 decade counters a 4521 24-stage frequency divider and a 4011 chip with 4 NAND gates. The frequency counter counts from 1 Hz to 1 MHz (999.999 KHz).

[...]
Learn more here: http://miguelpedroso.com/?p=714


I hope you guys like it. :)

Miguel Pedroso
Attachments
frequencycountersch.png
fqc.jpg
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Re: [Entry] CMOS Frequency Counter

Postby telenor » Tue Feb 24, 2015 2:17 am

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