Digital Arithmetic Operations and Circuits Questions and Answers

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Digital Arithmetic Operations and Circuits play an essential role in programming questions and answers related to computer architecture and electronics. This topic covers binary addition, subtraction, multiplication, division, and their implementation using combinational circuits like adders and multiplexers. Understanding these fundamentals helps candidates prepare for GATE, ISRO, and DRDO exams where logic design questions are common. Practicing digital electronics MCQs and circuit-based problems improves analytical skills and strengthens the foundation for embedded and VLSI design interviews.

Digital Arithmetic Operations and Circuits

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61. The inputs of a full adder are labeled A1, B1, and Cin.

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62. Larger number capacities may be obtained from 2-bit adders by paralleling them.

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63. If [A] = 10 and [B] = 01, then [A] + [B] = [ ].

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64. 111010002 is the 2's-complement representation of –24.

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65. The look-ahead-carry adder is slower than the ripple-carry adder because it requires additional logic circuits.

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66. The solution to the binary problem 1011 × 0110 is 01100110.

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67. The solution to the BCD problem 0101 + 0100 is 00001001BCD.

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68. A macrofunction is a self-contained description of a logic circuit with all of its inputs, outputs, and operational characteristics defined.

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69. A half-adder circuit would normally be used each time a carry input is required in an adder circuit.

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70. The binary subtraction 0 – 1 = is difference = 1 borrow = 0

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