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Electronics and Communication Engineering (ECE) : Microprocessors - Quiz(MCQ)
Which of the following flag condition is used for BCD arithmetic operations in microprocessor?
A)
Sign flag
B)
Zero flag
C)
Parity flag
D)
Auxiliary carry flag

Correct Answer : Option (D) :   Auxiliary carry flag


Explanation : Among all the five flag conditions in microprocessor, the auxiliary carry flag is used internally for BCD arithmetic operations. Based on the auxiliary flag, the instruction set doesn’t contain the conditional jump operation.

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