Posted by dapj20 on Sep 16, 2020 in Digital-Schematics, Multimeter-DMM
This is the third circuit that you will need to build a Simple Benchtop DMM with no Microcontroller. Here the U1D and U1B 4093 acts like a de-bouncing circuit for the push keys. The 4029 counts up scrolling to binary values 00, 01, 10, 11 for the four… more »