Which 8051 instruction combines a conditional jump with a bit-clearing operation, jumping if the specified bit is set and then clearing that bit after the jump condition is checked?
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Answer & Explanation
Correct AnswerD. JBC
Quick Explanation
JBC means Jump if Bit is set and Clear bit. If the addressed bit is 1, the 8051 clears it and branches to the target; if it is 0, execution continues without the jump.
Detailed Explanation
Correct Answer
D — JBC
Explanation
JBC means Jump if Bit is set and Clear bit. If the addressed bit is 1, the 8051 clears it and branches to the target; if it is 0, execution continues without the jump.
Key Concept
JBC Instruction
Exam Point
JBC = Jump on Bit + Clear.
Quick Trick
JBC = Jump on Bit + Clear.
Exam Tip
JBC = Jump on Bit + Clear.
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