Q. Which of the following is true while executing data transfer instructions?

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Q. The logical instruction that affect the carry flag during its execution is

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Q. The instruction that is used to complement or invert the bit of a bit addressable SFR is

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Q. The instructions that change the sequence of execution are

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Q. The control transfer instructions are divided into

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Q. The conditional control transfer instructions check a bit condition which includes any bit of

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Q. All conditional jumps are

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Q. The first byte of a short jump instruction represents

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Q. Which of the following is not an addressing mode of 8051?

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Q. The symbol, ‘addr 16’ represents the 16-bit address which is used by the instructions to specify the

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Q. The external interrupts of 8051 can be enabled by

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Q. The bits that control the external interrupts are

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Q. EA bit is used to

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Q. The number of priority levels that each interrupt of 8051 have is

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Q. The priority level of interrupt of 8051 for which SI(serial interrupt) interrupt is programmed is

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Q. The interrupt bit that when set works at level 1, and otherwise at level 0 is

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Q. All the interrupts at level 1 are polled in the second clock cycle of the

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Q. The 8259-A is a _________.

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Q. ______ is used to transfer data between microprocessor and I/O process.

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Q. The registers that contain the status information is

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