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CPL Bit Instruction

The instruction CPL P1.5 in the 8051 microcontroller performs which action?

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Answer & Explanation

Correct AnswerA. Toggles the current logic level of the pin P1.5 (if it was high, it becomes low, and vice versa).

Quick Explanation

CPL means complement. Applied to a bit-addressable pin such as P1.5, it replaces the bit by its logical complement: 1 becomes 0 and 0 becomes 1.

P1.5 ← NOT(P1.5)

A — Toggles the current logic level of the pin P1.5 (if it was high, it becomes low, and vice versa).

CPL means complement. Applied to a bit-addressable pin such as P1.5, it replaces the bit by its logical complement: 1 becomes 0 and 0 becomes 1.

CPL Bit Instruction

P1.5 ← NOT(P1.5)

CPL = Complement = Toggle.

CPL = Complement = Toggle.

CPL = Complement = Toggle.

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