Nor Gate

Not Gate

A NOR gate and a NAND gate are connected shown. Two different sets of inputs are given to this set up. In the first case, the inputs to the gates are A = 0, B = 0, C = 0. In the second case, the inputs are A = 1, B = 0, C = 1. The output D in the first case and second case respectively are

Logic gates AND|OR|NAND|NOR| Boolean expression for Logic Gates

Two signals A, B as given below are applied to (i) AND (ii) NOR and (iii) NAND gates. Draw the output wave form in each case.

It is required to design a (two -input) logic gate, using an appropriate number, of : (a) NAND gates that gives a 'low' output only when both the inputs are 'low'. (b) NOR gates that gives a 'high' output only when both the inputs are 'high'. Draw the logic circuits for these two cases and write the truth table, corresponding to each of the two designs.

Using truth tables of AND gate and NOT gate show that NAND gate is an AND gate followed by a Not gate hence write the truth table of NAND gate

A NAND gate followed by a NOT gate is :-

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

How many NAND gates are required to realise (i) OR gates and (ii) AND gate.

If the output of OR gate is used as input of NOT gate, the combination of gates is called the...............