Explore topic-wise MCQs in 8051 Microcontroller.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your 8051 Microcontroller knowledge and support exam preparation. Choose a topic below to get started.

1.

XRL, ORL, ANL commands have _______

A. accumulator as the destination address and any register, memory or any immediate data as the source address
B. accumulator as the destination address and any immediate data as the source address
C. any register as the destination address and accumulator, memory or any immediate data as the source address
D. any register as the destination address and any immediate data as the source address
Answer» B. accumulator as the destination address and any immediate data as the source address
Discussion
2.

CJNE instruction makes _______

A. the pointer to jump if the values of the destination and the source address are equal
B. sets CY=1, if the contents of the destination register are greater then that of the source register
C. sets CY=0, if the contents of the destination register are smaller then that of the source register
D. none of the mentioned
Answer» E.
Discussion
3.

ANL instruction is used _______

A. to AND the contents of the two registers
B. to mask the status of the bits
C. all of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion