This generates a wide variety of digital signals. I made it when I was pursuing an experise in digital multiplexing.
Generates signals from 3Hz to 500 KHz. The main output has a gain control, It can be AM or FM modulated and has a variety of waveforms.
There is also a square wave output,
This generates waveforms to test ICs.
It was originally used to show the results on a big color CRT, but that is long gone!
Generates a sawtooth waveform.
I needs a trigger input. I can be quite slow.