A good example comes via a project from [Scott, AJ4VD], a very simple frequency ... circuit is evident. There was a time when a project like this one would have required multiple integrated ...

This clock was inspired by a few circuits found in a 1967 book Electronic ... and since it’s pretty easy to get the mains frequency, a neon logic clock starts looking like a relatively easy ...

Prescalers are used in frequency-counter circuits to bring the frequency down to a level that can be handled by standard silicon signal-processing circuits. For example, a divide-by-two prescaler ...