What is a level 0 and level 1 in a data flow diagram?
I’m not sure but I think this is what you’re asking. In electronics a signal can either be high or low. In data if a signal is high then that means there’s a pulse, if it’s low then there is no pulse. A high signal is known as a 1, and a low is known as a 0. So, in your diagram 0 means no data, 1 means data. Usually in electronics we use and, or, and/or, not, notand, xor, xorand & xorandor gates to make the pulses of data do something useful. You can get these ready made or use a system of transistors, relays or valves to do it.
