The AND gate has two inputs A and B. The output of the gate, A.B, depends on the two inputs according to the truth table at the ... all kinds of logic circuits were made using vacuum tubes.

The microcontroller continually polls for connections, applies the correct logic via a lookup table, and lights the ... tool are numerous and varied, from simple things like displaying traffic ...

Each operator has a standard symbol that can be used when drawing logic gate circuits. In an AND gate, both inputs need to be 1 for the output to be 1.

A ‘1’ in a truth table represents where the input or output is ‘high’, eg where a switch is pressed or a lamp is lit. A ‘0’ represents the opposite, eg where a switch is not pressed or ...