Xicor’s digitally controlled E²POT ICs provide ergonomic and long-lasting alternatives to mechanical potentiometers. The ICs in the X9CMME series have a 7-bit counter with reversible count direction ...

LSI Computer Systems (LSI/CSI) has created a family of 63 tap (6bit) digital potentiometers for direct connection to quadrature decoders, push buttons, GPIOs or SPI serial controls. Debounce circuits ...

A quadrature encoder uses two output channels offset in phase to detect both direction and position with greater precision.

Having written a little about quadature decoder chips, I have had a look around for circuits that do a similar job – sadly, I cannot recall the circuit of the one built years ago for a college ...