Falstad Circuit Simulator. This is an electronic circuit simulator. The simulation speed slider controls how often in real time the computer calculates a step.
The green color indicates positive voltage. Falstad circuit online circuit simulator extremely simple web platform that runs on any browser. This is an electronic circuit simulator.
A red color indicates negative voltage.
The step size controls how long in simulated time each step is. The gray color indicates ground. To turn a switch on or off just click on it. I was experimenting with the falstad circuit simulator and built a virtual copy of a circuit i have used with actual parts in order to understand better how and why it works.