[sdiy] Re: S[DIY} frequency counter

[David G. Dixon]

> It depends on your goal. If you're trying to learn something about
> digital design, and this group is about doing it yourself, then using a
> few (obsolete?, unavailable?) chips that do everything for you and
> wiring it up per a datasheet is fairly pointless.  You may as well go
> buy a cheap multimeter with built-in freq counter, gut it out of its
> case, and stick it on a panel.

More importantly, it depends on what you actually want to achieve with the
device.  I would like to be able to measure fractions of Hz at the low end
of the audio spectrum or even below.  Hence, I will probably end up adding a
PLL to multiply the signal...  The Art of Electronics has a very nice
subchapter on frequency counting and period measurement, by the way.