Question

explain NAND gate in detail​

Answer 1

Answer:

In digital electronics, a NAND gate (NOT-AND) is a logic gate which produces an output which is false only if all its inputs are true; thus its output is complement to that of an AND gate. A LOW (0) output results only if all the inputs to the gate are HIGH (1); if any input is LOW (0), a HIGH (1) output results.

Answer 2

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★The NAND gate or “NotAND” gate is the combination of two basic logic gates, the AND gate and the NOT gate connected in series.

★The NAND gate and NOR gate can be called the universal gates since the combination of these gates can be used to accomplish any of the basic operations.

★Hence, NAND gate and NOR gate combination can produce an inverter, an OR gate or an AND gate.

★The output of a NAND gate is high when either of the inputs is high or if both the inputs are low. In other words, the output is always high and goes low only when both the inputs are high.

★ The logic NAND function is given by the Boolean expression Y=A.B¯. Here A, B are the inputs and Y is the output.

★The Boolean expression given for a NAND gate is that of logical addition and it is opposite to AND gate.

★The Boolean expression is given by a single dot (.) with an overline over the expression to show the NOT or the logical negation of the NAND gate.

★Symbol and truth table of NAND gate

The symbol of the NAND gate is represented as a combination of AND gate and NOT gate. The Boolean expression is given as Y=A.B¯.

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