(i) Distinguish between a conductor and a semiconductor on the basis of energy band diagram.
(ii) The following figure shows the input waveforms (A, B) and the output waveform (Y) of a gate. Identify the gate, write its truth table and draw its logic symbol.

Question

Philoid · Accepted Answer

(i) Conductor: The valence band is partially or completely filled.

It has zero forbidden energy gap between conduction and valence band.

Insulator: The valence band is completely filled and conduction band is empty.

The forbidden energy gap between conduction and valence band is greater than or equal to 3eV.

(ii) The truth table can be obtained from the waveforms (from t=1)

So, the gate is NAND gate with logic symbol

(i) Distinguish between a conductor and a semiconductor on the basis of energy band diagram.(ii) The following figure shows the input waveforms (A, B) and the output waveform (Y) of a gate. Identify the gate, write its truth table and draw its logic symbol.