How many BCD adders would be required to add the numbers 97310 + 3910? 3 4 5 6

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Question
How many BCD adders would be required to add the numbers 973₁₀ + 39₁₀?
Options
A. 3
B. 4
C. 5
D. 6

Correct Answer

3

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Digital Arithmetic Operations and Circuits problems

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1. Which of the statements below best describes the given figure?
Options
A. Half-carry adder; Sum = 0, Carry = 1
B. Half-carry adder; Sum = 1, Carry = 0
C. Full-carry adder; Sum = 1, Carry = 0
D. Full-carry adder; Sum = 1, Carry = 1

2. What distinguishes the look-ahead-carry adder?
Options
A. It is slower than the ripple-carry adder.
B. It is easier to implement logically than a full adder.
C. It is faster than a ripple-carry adder.
D. It requires advance knowledge of the final answer.

4. Convert each of the signed decimal numbers to an 8-bit signed binary number (two's-complement).
+7 ?3 ?12
Options
A. 0000 0111 1111 1101 1111 0100
B. 1000 0111 0111 1101 0111 0100
C. 0000 0111 0000 0011 0000 1100
D. 0000 0111 1000 0011 1000 1100

6. An input to the mode pin of an arithmetic/logic unit (ALU) determines if the function will be:
Options
A. one's-complemented
B. arithmetic or logic
C. positive or negative
D. with or without carry

8. What is wrong, if anything, with the circuit in the given figure based on the logic analyzer display accompanying the circuit?
Options
A. The CO terminal is shorted to ground.
B. The S1 output is shorted to V_cc.
C. The P1 input is not being added into the total.
D. Nothing is wrong; the circuit is functioning correctly.

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