Technical interview questions and answers are essential for Micro Processor Interviews because companies want to evaluate your understanding of CPU architecture, instruction sets, registers, addressing modes, interrupts, and memory hierarchy. Microprocessor fundamentals are crucial for electronics, embedded systems, and computer engineering interviews. Companies like TCS, Infosys, Wipro, Cognizant, and Capgemini frequently include microprocessor questions in placement tests and technical rounds. This guide provides the most important Micro Processor interview questions with clear explanations to help freshers and engineering students strengthen their basics. Preparing these questions will boost your confidence during hardware-related interviews, lab-oriented assessments, and competitive exams.
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21. Why crystal is a preferred clock source?
Because of high stability, large Q (Quality Factor) & the frequency that doesnt drift with aging. Crystal is used as a clock source most of the times.
22. Which interrupt is not level-sensitive in 8085?
- RST 7.5 is a raising edge-triggering interrupt.
23. What does Quality factor mean?
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24. What are level-triggering interrupt?
RST 6.5 & RST 5.5 are level-triggering interrupts
25. What are the flags in 8086?
In 8086 Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag.
26. What is meant by Maskable interrupts?
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27. What is Non-Maskable interrupts?
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28. Which interrupts are generally used for critical events?
- Non-Maskable interrupts are used in critical events. Such as Power failure, Emergency, Shut off etc.,
29. Give examples for Maskable interrupts?
RST 7.5, RST6.5, RST5.5 are Maskable interrupts
30. Give example for NonMaskable interrupts?
Trap is known as NonMaskable interrupts, which is used in emergency condition.