Question
Identify the gate equivalent to the ‘dotted box’ shown here and give its symbol and truth table.

The inputs A and B shown here, are used as the two inputs in this set up. Give the shape of the output Y obtained from these inputs.

Solution
The truth table of the given gates combination is:

The combination of gates is equivalent to the AND gate.
Output waveform is as shown in figure below:


The combination of gates is equivalent to the AND gate.
Output waveform is as shown in figure below:
