Interactive simulation
Two NOR gates, one bit of memory — pulse S and it remembers.
This pair of cross-coupled NOR gates is one bit of memory: pulse S, let go, and Q stays high — it remembers. Switch to Hold and raise both inputs to force the forbidden S=R=1 state, then watch the race when you release them together (flip back to Momentary).
Stepper motorFull, half and wave drive — watch the coils fire and the rotor follow.
TransformerTurns ratio in action — step the voltage up or down.
Transistor switchDrive an NPN into saturation and watch Q slide down the load line.
Transmission lineA step launched into a mismatched trace, bouncing until it settles — why a short track suddenly matters.
UART frameOne byte on a wire that carries no clock — and the receiver's own timer walking off the bit centres.
Zener regulatorIt holds the voltage — until the load asks for more than it can spare.
555 astableThe capacitor sawtooth and output square of the classic astable.
ADC quantizationHow many bits before the staircase disappears into the sine?