Factorio Customizable Processing Unit. Allow to write any logic on low level machine code. The fCPU acts like a programmable microcontroller with a vector coprocessor that supports many useful instructions.
Mods introducing new content into the game.
Related to roboports and logistic robots.
Entities which interact with the circuit network.
How to divide each red by each green inside fCPU?
This is possible after v0.4.41 xdiv m1 red green
xdiv m1 red green