Hi, I have quite simple problem, which stopped me for a while, because I read that logic gates in TTL standard have high, low and the forbidden between state and I saw the table, but I would like to measure it on my own. I'm using the multisim and I have troubles with building the circuit to measure when I have logic '1' on input and when on output (on output should be higher), so could someone show me how should it look like so I could build it and measure this values on my own?