Figure 4: I2C mux use case example. The extensibility brought to the I2C standard by simple devices such as I2C level translators, I2C buffers, GPIO expanders, and switches is helping PLC system ...

They compared a Python-based control loop on a Raspberry Pi 3B against an C0-12DD1E-2-D AutomationDirect CLICK Programmable Logic Controller (PLC) using a simple water heating example.

Switched capacitor blocks are the basic building blocks of a programmable analog solution. They enable the integration of both analog and digital functions onto a single chip and define today’s true ...

Software and Systems Modeling (2014). [2] Toward Reliable Programmable Logic Controller Function Block Diagrams. IEEE Access (2021).

Microchip's PIC10F32X incorporates a number of neat features like a Configurable Logic Cell, a Complementary Waveform Generator, and a Numerically Controlled Oscillator.