BPSC Tre 4.0 Computer Science MCQ | Half Adder_Digital Logic

BPSC Tre 4.0 Computer Science MCQ | Half Adder_Digital Logic

Half Adder_ Digital Logic MCQ A Half Adder is a combinational digital circuit that adds two binary digits and produces Sum and Carry outputs. 1. A Half Adder is used to add: A. Two decimal numbers B. Two binary digits C. Three binary digits D. Two hexadecimal digits Answer: B Explanation:  A Half Adder adds two 1-bit binary inputs . 2. Half Adder has: A. Two inputs and one output B. Two inputs and two outputs C. Three inputs and one output D. Three inputs and two outputs Answer: B Explanation: Inputs: A, B Outputs: Sum (S) and Carry (C) 3. Half Adder is a: A. Sequential circuit B. Memory device C. Combinational circuit D. Clocked circuit Answer: C 4. Outputs of a Half Adder are: A. Sum and Borrow B. Difference and Carry C. Sum and Carry D. Carry and Overflow Answer: C 5. Carry output of a Half Adder is generated when: A. Any one input is 1 B. Both inputs are 0 C. Both inputs are 1 D. Inputs are different Answer: C Explanation:  Carry = 1 only for A = 1 and B = 1 . 6. Sum output of Half Adder is 1 when: A. Both …