An instruction how to install the CirNavS in three steps ( or two steps if you already have java running on your computer).
Step 1: download and install the CNS from cirnavsys.com/download
Step 2: download and install java e.g. from https://www.oracle.com/java/technologies/javase-downloads.html
Step 3: open the CirNavSys and go through its setup routine.

Creating a circuit in KiCad and simulating it in the CirNavSys: After installing, you might want to create your own circuits in KiCad and simulate them in the CirNavSys. This image series does exactly that: Here we create a small example circuit in KiCad, and then simulate it in the CirNavSys.

Creating a circuit in EAGLE and simulating it in the CirNavSys: EAGLE is an alternative circuit editor.

An analogy between electric and hydraulic power. The analogy shows that you can regard electric sizes in a similar way as hydraulic sizes.

How can you connect multiple motors with only one battery? How is the power of the battery divided between those motors?

Explaination how an inverter (also called "NOT-gate") works in the usual cmos technology.
The inverter is one of the three fundamental elements of digital electronics, together with the AND-gate and the OR-gate.

Explaination how an AND-gate works in CMOS technology.

The AND-gate is one of the three fundamental elements of digital electronics, together with the NOT-gate and the OR-gate.

Explaination how an OR-gate works in the usual cmos technology.
The OR-gate is one of the three fundamental elements of digital electronics, together with the AND-gate and the inverter. It consists of three NMOS transistors and three PMOS transistors. One pair of NMOS and PMOS form an inverter, the rest forms an NOR-Gate. The output of the NOR is inverted to OR. That is why most integrated chips that form an OR, also have an output for the NOR: it simply does not need any more transistors, because the NOR is already created. So you need only one pin to carry out the NOR.