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Digital Logic Circuits Quiz - Computer Organization Objective Questions and Answers

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Computer Organization objective Questions with Answers from chapter Digital Logic Circuits page contain five MCQs. Each quiz objective question answer on adder, flip-flop etc. has four possible answers. Select one and check it with the given correct answer.
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(6) The half adder performs
[A] Decimal addition operation for 2 decimal inputs
[B] Binary addition operation for 2 binary inputs
[C] Decimal addition operation for 2 binary inputs
[D] Binary addition operation for 2 decimal inputs

Comment

Answer: Option [C]

The half adder performs decimal addition operation for two binary inputs

(7) Which Logic circuit would you use for addressing memory ?
[A] Full adder
[B] Multiplexer
[C] Decoder
[D] Direct memory access circuit

Comment

Answer: Option [C]

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(8) One of the major difference between a combinational logic circuit such as a decoder and a storage circuit such as an RS latch is that
[A] The storage circuit requires a different class of gates.
[B] The storage circuit requires a clock input.
[C] The storage circuit uses feedback
[D] The storage circuit has no propagation delay

Comment

Answer: Option [B]

Flip-Flop is the basic unit of storage circuits. Where Flip-Flops require a clock input.

(9) A Flip-Flop circuit can be used for
[A] Counting
[B] Scaling
[C] Rectification
[D] Demodulation

Comment

Answer: Option [A]

Counter is a sequential circuit which counts its state & used to construct finite state machines

(10) One bit full adder can be designed using
[A] Two half adders and one OR gate
[B] Two half adders
[C] One Ex-OR and two NAND gates
[D] Two Ex-OR and four NAND gates

Comment

Answer: Option [B]

A 1 bit full adder can be constructed by using 2 half adders

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