# A NAND gate is called a universal logic element because

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A NAND gate is called a universal logic element because any logic function can be realized by NAND gates alone.

## Related questions

What is the purpose of a NAND gate?

For a NAND gate, when one or more inputs are low then the output will be A) Low B) High C) Alternately high and low D) High or low depending on relative magnitude of inputs

The output of a 2-input NAND gate with high at both the inputs will be • High • Low • High & low • None of the above.

Output of NAND gate is 0. for three inputs when:

Read the following statements: i. Gate is a combinational logic. ii. JK Flip-flop in toggle mode is not combinational logic. iii. MSJK Flip-flop suffers from race-around. iv. Counters are sequential circuits. Which choice is correct? (A) i, ii (B) i, ii, iv (C) ii, iii, iv (D) i, ii, iii

Which of the following gate is called universal gate?  (A) AND (B) NOT (C) NOR (D) EX-OR

The complete set of only those Logic Gates designated as Universal Gates is  (A) NOT, OR and AND Gates (B) XNOR, NOR and NAND Gates (C) NOR and NAND Gates (D) XOR, NOR and NAND Gates

When A = 0., B = 0, C = 1 then in two input logic gate we get gate  (A) XOR gate (B) AND gate (C) NAND gate (D) NOR gate

The minimum number of NAND gates required to implement a XOR gate is  A) 5 B) 4 C) 3 D) 6

What is the propagation delay of a logic gate?

A NOR gate is equivalent to a bubbled AND gate. This statement is an outcome of: (1) De Morgan’s Law (2) Involution Law (3) Law of Absorption (4) Idempotent Law

The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is  (A) 4 (B) 6 (C) 8 (D) 10

The o/p of a 2 - input OR gate is 1 when its   1. both inputs are 1 2. both inputs are 0 3.either input is 1 4. either input is 0

The output of logic gate is '1' when all its inputs are at logic '0' The gate is (A) NAND/EX-OR (B) NOR/EX-OR (C) AND/EX-NOR (D) NOR/EX-NOR

The basic logic gate whose output is the complement of the input is the: - a) OR gate b) AND gate c) inverter d) comparator

How many minimum number of NOR gates are required to realize a two-input X-OR gate?

TTL logic family is most popularly used industries because it  1.provides greater operating speed 2.has a good fan in & fan out 3.has easy interface with other digital circuitry 4.all the above

The current mode logic (CML) is same as A) LSI B) CMOS C) TTL D) ECL

The output of an exclusive–NOR gate is 1. Which input combination is correct? (1) A = 1, B = 0 (2) A = 0, B = 1 (3) A = 0, B = 0 (4) None of these

The gate whose output is LOW, if and only if all the inputs are HIGH, is

What is not true in the context of “Don’t Care Condition” in digital logic ? (A) It corresponds to combination of logic variables whose value is not defined (B) It can be assumed to be 0 or 1 (C) It can be assumed to be 1 only (D) It helps in simplification of logic function

What is an inverter gate?

Draw the symbol, logic expression and truth table of NOR gate.

Which one of the following logic circuit has the highest speed as compared to the currently available logic circuits? A) Resistance-transistor logic B) Emitter-coupled logic C) Integrated-injection logic D) Diode-transistor logic

The following logic families have their propagation delay. Arrange them from lowest propagation delay to highest propagation delay. 1. TTL (Standard) 2. ECL 3. Low power CMOS 4. DTL (A) 2, 1, 4 and 3 (B) 2, 4, 1 and 3 (C) 4, 2, 3 and 1 (D) 1, 2, 3 and 4

Logic state 0 in positive logic corresponds to   1. zero voltage 2. positive voltage 3.higher voltage level 4. lower voltage level

Which of the following circuits come under the class of sequential logic circuits ?   P. Full adder   Q. Full subtractor   R. Half adder   S. JK flip   T. Counter   Select the correct answer from the codes given below: (a) P and Q (b) Q and R (c) R and S (d) S and T

Which of the following gates can be used to realize all possible combinational logic functions?  (i) OR gate (ii) NOR gate (iii) Exclusive OR gate (iv) NAND gate (v) AND gate  (A) (iii), (iv) and (v)  (B) (i), (iii) and (iv)  (C) (ii) and (iv)  (D) (i) and (v)

Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is