Binary Adders and Subtractors Quiz
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Questions and Answers

What is the main role of binary adders and subtractors in digital systems?

  • To perform arithmetic operations (correct)
  • To process floating-point calculations
  • To manage data storage
  • To enhance graphical outputs

Binary adders and subtractors can perform addition and subtraction without the need for additional hardware using two's complement method.

True (A)

What happens to the performance of binary adders and subtractors as the size of the numbers increases?

Carry propagation delay increases.

In a full adder, when K=0, the operation is performed on __________ numbers in addition.

<p>four-bit</p> Signup and view all the answers

Match the following components with their function in a binary adder-subtractor:

<p>C0 = Initial carry input S0 = Least significant bit of the sum/difference C3 = Total carry output A1, A2, A3 = Inputs to the second, third, and fourth full adders</p> Signup and view all the answers

What determines whether a Binary Adder-Subtractor performs addition or subtraction?

<p>The value of the control signal K (A)</p> Signup and view all the answers

A half adder can handle more than two input bits.

<p>False (B)</p> Signup and view all the answers

What is the purpose of a Binary Subtractor?

<p>To perform the subtraction of two binary numbers.</p> Signup and view all the answers

The output of the full adder when K=1 is obtained by adding A and the ______, represented as A + (B0').

<p>complement of B0</p> Signup and view all the answers

Match the following components with their functions in a Binary Adder-Subtractor.

<p>Half Adder = Adds two one-bit numbers Full Adder = Adds multiple bits with carry propagation Control signal K = Determines operation (addition or subtraction) Two's Complement = Used for binary subtraction</p> Signup and view all the answers

What is the initial operation performed by a Binary Subtractor before adding to the original number?

<p>Negates to get its two's complement (C)</p> Signup and view all the answers

A Binary Adder can only sum two binary numbers of one bit each.

<p>False (B)</p> Signup and view all the answers

How many full adders are required for a 4-bit binary operation?

<p>4</p> Signup and view all the answers

Flashcards

Binary Adder

An electronic circuit adding two binary numbers.

Half Adder

Basic adder with two one-bit inputs and sum/carry output.

Full Adder

Adder handling three bits: two input bits and carry-in.

Binary Subtractor

Circuit subtracting two binary numbers using 2's complement.

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2's Complement

Method to represent negative numbers in binary.

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Control Line (K)

Binary signal determining add/subtract operation in an adder-subtractor circuit.

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Ripple-Carry Adder

Adder type where carry propagates through multiple Full Adders.

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Adder-Subtractor Circuit

Combines adder and subtractor functions in one single electronic circuit using the control signals.

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Binary Adder-Subtractor

A circuit performing both addition and subtraction of binary numbers using a control line (K).

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Control Line (K)

A binary signal that determines whether an adder-subtractor performs addition or subtraction.

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n-bit Adder

An adder that handles binary numbers of length n.

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Carry Propagation Delay

Time taken for carry to ripple through multiple full adders in an adder circuit.

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2's Complement

A method for representing negative numbers in binary using subtraction.

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