question_answer

Draw the output waveform at X, using the given inputs A and B for the logic circuit shown below. Also, identify the logic operation performed by this circuit.                  

Answer:

                    The first gate is NAND gate. Its output \[\Upsilon \] is fed to a NOT gate (made from NAND gate).                     \[\therefore \]\[\Upsilon =\overline{A\,.\,B}\] and \[X=\bar{\Upsilon }=A\,.\,B\] Hence the given circuit performs the function of an AND gate. The output waveform obtained at X is of the type shown below.