TRANSISTOR & GATES PROBLEM

Derive OR gate, AND gate and NOT gate from NAND gate.

Explain how an OR gate may be constructed with AND and NOT gates. A logic circuit is given in the Fig.charge it in simpler form. [Refer to conceptual Problem 4 for first part. The given figure represents AND gates as y=A.(barA(A+B))=A.barA+A.B=A.B]

Given below are symbols for some gates. The OR gate and the AND gate, respectively are

Describe (i) NAND gate, (ii) NOR gate and (iii) XOR gate.

Draw the output wave from (Y) of the (i) OR gate (ii) NOR gate (iii) AND gate (iv) NAND gate

Derive OR, AND and NOT gate from NOR gate.

To obtain OR gate from NOR gate , you will need ………. .

Write the Boolean equation for a NOR gate and a NAND gate

To get NOT gate from NAND gate, we need

Why are NAND and NOR gate called universal gate ?