Electronics Simulators

Electronics is learned by building circuits, but components burn out and breadboards are easy to wire wrong. In the breadboard simulator you place resistors, LEDs, diodes, transistors and sensors and the circuit solves itself, with a multimeter to measure voltage and current between any two points. The logic gate simulator moves on to digital electronics: you build circuits with AND, OR and NOT gates, see their truth table and their Boolean function, simplify them with a Karnaugh map and turn them into real 74HC chips. I added challenges with automatic checking to both, from a single LED to a complete digital circuit.