
Originally Posted by
fiveworlds
You can easily take the not gate as an example every input i.s inverted. i am told this is +5v for 1 and 0v for0. So the output i want is 0 when i input a 1. The not gate acts as a switch if input is 0 current can flow through q1 but not q2 therefore current can flow through q3 and a 1 is output. If input is 1 q1 and q2 are on and q3 is off so current flows to earth giving you a 0. Maybe you could try multimedia logic it allows you to use or, not and AND gates to make circuits like a full adder etc.