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Microprocessor Interview Questions & Answers - Learning Mode

Microprocessor Interview Questions & Answers - Learning Mode

A microprocessor is a computer processor which incorporates the functions of a computer's central processing unit (CPU) on a single integrated circuit (IC), or at most a few integrated circuits. A microprocessor is an electronic component that is used by a computer to do its work. It is a central processing unit on a single integrated circuit chip containing millions of very small components including transistors, resistors, and diodes that work together.

Try Microprocessor Interview Questions & Answers - Exam Mode

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Microprocessor Interview Questions & Answers - Learning Mode
Try Microprocessor Interview Questions & Answers - Exam Mode
Question: Give example for Non-Maskable interrupts?

Answer: Trap is known as Non-Maskable interrupts, which is used in emergency condition. Source:
Question: In what way interrupts are classified in 8085?

Answer: In 8085 the interrupts are classified as Hardware and Software interrupts. Source:
Question: Which interrupt is not level-sensitive in 8085?

Answer: RST 7.5 is a raising edge-triggering interrupt.
Question: What is 1st / 2nd / 3rd / 4th generation processor?

Answer: The processor made of PMOS / NMOS / HMOS / HCMOS technology is called 1st / 2nd / 3rd / 4th generation processor, and it is made up of 4 / 8 / 16 / 32 bits. Source:
Question: What does Quality factor mean?

Answer: The Quality factor is also defined, as Q. So it is a number, which reflects the lossness of a circuit. Higher the Q, the lower are the losses. Source:
Question: Can an RC circuit be used as clock source for 8085?

Answer: Yes, it can be used, if an accurate clock frequency is not required. Also, the component cost is low compared to LC or Crystal Source:
Question: What is Tri-state logic?

Answer: Three Logic Levels are used and they are High, Low, High impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri-state logic has a third line called enable line. Source:
Question: What is Stack Pointer?

Answer: Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address of the top of the stack. Source:
Question: What?s the speed and device maximum specs for Firewire?

Answer: IEEE 1394 (Firewire) supports the maximum of 63 connected devices with speeds up to 400 Mbps. Where?s MBR located on the disk? Main Boot Record is located in sector 0, track 0, head 0, cylinder 0 of the primary active partition. Source:
Question: What is meant by a bus?

Answer: A bus is a group of conducting lines that carriers data, address, & control signals. Source:
Question: Why 8086 got that name?

Answer: The nomenclature follows:<br><br>80= Designed during 80s (released 1978)<br>6= 16Bit<br><br>I guess second "8" was so, because at the beginning of project they want to show it follows 8085. Another advantage was maybe to show this generation is source code compatible to 8085 and 8080. Therefore they should have kept it. Source:
Question: What is the meaning of "8086".

Answer: 8006 is nothing but a microprocessor which is use in electronic devices to controlits programs. Source:
Question: Name the processor lines of two major manufacturers?

Answer: High-end: Intel - Pentium (II, III, 4), AMD - Athlon. Low-end: Intel - Celeron, AMD - Duron. 64-bit: Intel - Itanium 2, AMD - Opteron. Source:
Question: What is the difference between primary & secondary storage device?

Answer: In primary storage device the storage capacity is limited. It has a volatile memory. In secondary storage device the storage capacity is larger. It is a nonvolatile memory. Primary devices are: RAM / ROM. Secondary devices are: Floppy disc / Hard disk. Source:
Question: What does EU do?

Answer: Execution Unit receives program instruction codes and data from BIU, executes these instructions and store the result in general registers. Source:
Question: What is the difference between 8086 and 8088?

Answer: The BIU in 8088 is 8-bit data bus & 16- bit in 8086.Instruction queue is 4 byte long in 8088and 6 byte in 8086. Source:
Question: Which Stack is used in 8086? k is used in 8086?

Answer: FIFO (First In First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first. Source:
Question: What happens when HLT instruction is executed in processor?

Answer: The Micro Processor enters into Halt-State and the buses are tri-stated. Source:
Question: What is Program counter?

Answer: Program counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction Source:
Question: Which interrupt has the highest priority?

Answer: TRAP has the highest priority Source:

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