(a) Write the functions of the three segments of a transistor.
(b) The figure shows the input waveforms A and B for ‘AND’ gate. Draw the output waveform and write the truth table for this logic gate.

a) Emitter; supplies majority carriers for the flow of current.
Base; Controls the flow of current carriers
Collector; Responsible for collection of majority carriers
b)
The truth table for AND gate
| Input | Output | |
| A | B | Y |
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |