Is it still a 1-bit interface if you add time to the mix? Strictly speaking, a 1 bit interface is on or off and nothing else. There is no timing in there, no b

Is it still a 1-bit interface if you add time to the mix? Strictly speaking, a 1 bit interface is on or off and nothing else. There is no timing in there, no blinking or anything. It's 1 or 0. If you add time, you suddenly end up with a discrete or even a real function which maps time values to 1 bit. That's however a lot more than 1 bit to encode in total. If you just think about it, if your device changes state precisely every second for 128 seconds, the entire communication between you and your device is 128 bit even though the lamp itself only outputs 1 bit per time. That's not a 1 bit interface anymore.