[zmix]

I wrote:

> [Digital] Signals [when not transmitted optically] get transmitted as electricity with ever changing voltages [...]

You wrote:

> Your attempt to describe how digital signals are transmitted is actually just plain wrong.

Wikipedia writes:

> A waveform [...] as a digital signal [...]. The two states are usually represented by some measurement of an electrical property: Voltage is the most common [...]

Therefore I will leave it here.