The LCD voltmeter is used for precisely setting coefficients, to view the output you need some kind of scope. This is typical of most analog computers. https:

The LCD voltmeter is used for precisely setting coefficients, to view the output you need some kind of scope. This is typical of most analog computers. https://the-analog-thing.org/wiki/Oscilloscope https://the-analog-thing.org/wiki/Oscilloscope