Logic Gate Truth Table - Electronics - GCSE Physics

here is a

logic

gate

system or network and we are asked to fill in the

truth

table

because it is made of a

gate

and a not gate and a nor gate which is an or gate with a not in its output so let's take a look to this. breaking it into pieces and first we will look at the outputs p and Q, so first of all, p p is the output of a gate and and the gate says that if a and b are

logic

High, then P will be logic High, so like all other combinations, you will get zero logic or logic low, so P will be low, low, low or high when we get A and B, so there is our first output, what about Q?

Well, Q is the output of a non gate and then it depends on B and will invert the level of B to the opposite, so if B is a logic zero we will get a logic one, if B is a logic one we will get a logic zero and so on, a low state, high, high state State low state, so now we have p and Q before we go directly to this nor gate, it is useful to take a look at the

truth

table

for an or gate separately, so let's make our possible combinations for an or be 0 0 0 1 1 0 or one so that we can have an output or and an organization tells us that if we have one input or another that is high or both, then we will get an A, a logic high output, so We won in this first case.

We won't get a high logic because none of them have a high logic, but here we will do it here we will do it and also here we will do it now we will deal with the door no which is just nailed to the end of or to do it. in a ni gate, so our ni gate would have the opposite signals, the opposite levels and we would get a zero 0 0, so let's use this truth table now to calculate what our output would be in our main table, so 01 there we go 01 We're going to get a zero 0 0 we're going to get a one 0 1 again, same thing, a zero and a zero would also get a zero, so there's our output for this logic gate network and it's easier to break down. break it down into little pieces and work out each little piece individually like we've done there especially for Norgate, which is kind of two stages in one.