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Logic Gates

61.

An exclusive-OR gate output is HIGH when the inputs are unequal.

Answer: A

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Answer: D

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63.

How many inputs are on the logic gates of a 74HC21 IC?

Answer: D

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Answer: B

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65.

Extremely low power dissipation and low cost per gate can be achieved in:

Answer: B

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66.

How many entries would a truth table for a four-input NAND gate have?

Answer: C

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67.

Which one of the following will give the sum of full adders as output ?

Answer: D

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68.

The maximum frequency at which digital data can be applied to gate is caled

Answer: A

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Answer: C

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70.

Which of the following gates has the exact inverse output of the OR gate for all possible input combinations?

Answer: A

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