(31337_20065838867866, `In electronics, two components outputting different values on the same wire causes a short circuit.

[center][image="short_circuit.png"][/center]

However, by disconnecting output pins from a wire, it is possible for multiple pins to share the same wire (called a bus). Importantly, at most 1 component output should remain connected each cycle, otherwise you risk a short circuit.

[center][image="switch.png"][/center]

In this simulator, pins that can be disconnected are grey.`)