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Welcome to the Microcontroller 8051 MCQs Page

Dive deep into the fascinating world of Microcontroller 8051 with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Microcontroller 8051, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of Microcontroller 8051, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Microprocessor.

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Check out the MCQs below to embark on an enriching journey through Microcontroller 8051. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Microprocessor.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Microcontroller 8051. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Microcontroller 8051 MCQs | Page 7 of 13

Q61.
The only memory which can be accessed using indexed addressing mode is
Discuss
Answer: (d).Program memory
Discuss
Answer: (b).accumulator with that of program counter or data pointer
Q63.
Which of the following is not an instruction of 8051 instructions?
Discuss
Answer: (d).All are instructions of 8051
Q64.
The logical instruction that affects the carry flag during its execution is
Discuss
Answer: (d).RLC A;
Q65.
In logical instructions, the immediate data can be an operand for
Discuss
Answer: (d).none of the mentioned
Q66.
If the most significant bit of relative address byte is 1, then the short jump instruction is
Discuss
Answer: (b).back jump
Discuss
Answer: (d).5 LSBs of opcode and 3 MSBs of 11-bit address
Discuss
Answer: (c).higher byte of jump location or subroutine
Q69.
The absolute jump instruction is intended mainly for a jump within a memory space of
Discuss
Answer: (b).2 Kbytes
Q70.
The LJMP instruction is very useful in programming in the external code memory space of
Discuss
Answer: (d).64 KB

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