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Logic Gates

121.

An OR gate output is HIGH only if all the inputs are HIGH.

Answer: B

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122.

What logic function is produced by adding an inverter to the output of an AND gate ?

Answer: A

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123.

A comparison between serial and parallel adder reveals that serial order

Answer: A

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124.

A toggle operation cannot be performed using a single

Answer: B

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125.

Odd parity of word can beconveniently tested by

Answer: D

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126.

The output of a NAND gate is LOW if ________.

Answer: B

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127.

How many full adders are required to construct an m-bit parallel adder ?

Answer: B

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128.

One advantage TTL has over CMOS is that TTL is ________.

Answer: B

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129.

A logic gate has one or more output terminals and one input terminal.

Answer: B

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Answer: C

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