[Entry] CMOS Frequency Counter

[Entry] CMOS Frequency Counter

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


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
Posts: 2
Joined: Sat Oct 27, 2012 2:26 pm

Re: [Entry] CMOS Frequency Counter

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

this is very nice post this is very nice post this is very nice post this is very nice post
Our excellent online Testking istqb certification training programs will lead you to success in the ged practice test
Posts: 1
Joined: Tue Feb 24, 2015 2:16 am

Return to Open 7400 Competition