1⟩ Why crystal is a preferred clock source?
Because of high stability, large Q (Quality Factor) & the frequency that doesn’t drift with aging. Crystal is used as a clock source most of the times.
Microprocessor
Home Computer Hardware Microprocessor
“Microprocessor Interview Questions and Answers will guide you about the program-controlled device, which fetches the instructions from memory, decodes and executes the instructions. Most Micro Processor are single- chip devices here you will learn all the aspects of a Microprocessor and its research based interview questions and answers which will be help full for getting a better job.”
24 Microprocessor Questions And Answers
2⟩ In 8085 which is called as High order / Low order Register?
Flag is called as Low order register & Accumulator is called as High order Register.
3⟩ 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.
4⟩ What is a Microprocessor?
Microprocessor is a program-controlled device, which fetches the instructions from memory, decodes and executes the instructions. Most Micro Processor are single- chip devices.
5⟩ What is SIM and RIM instructions?
SIM is Set Interrupt Mask. Used to mask the hardware interrupts.
RIM is Read Interrupt Mask. Used to check whether the interrupt is Masked or not.
6⟩ What are the major 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.
7⟩ Which Stack is used in 8086? k is used in 8086?
FIFO (First In First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.
8⟩ What does the EU do?
Execution Unit receives program instruction codes and data from BIU, executes these instructions and store the result in general registers.
9⟩ What are the different functional units in 8086?
Bus Interface Unit and Execution unit, are the two different functional units in 8086.
10⟩ What is Non-Maskable interrupts?
An interrupt which can be never be turned off (ie. disabled) is known as Non-Maskable interrupt
11⟩ What is meant by Maskable interrupts?
An interrupt that can be turned off by the programmer is known as Maskable interrupt.
12⟩ Where does the CPU Enhanced mode originate from?
Intel’s 80386 was the first 32-bit processor, and since the company had to backward-support the 8086. All the modern Intel-based processors run in the Enhanced mode, capable of switching between Real mode (just like the real 8086) and Protected mode, which is the current mode of operation.
13⟩ What is the Maximum clock frequency in 8086?
5 Mhz is the Maximum clock frequency in 8086.
14⟩ What are the various segment registers in 8086?
Code, Data, Stack, Extra Segment registers in 8086.
15⟩ Have you studied buses? What types?
There are three types of buses.
Address bus: This is used to carry the Address to the memory to fetch either Instruction or Data.
Data bus : This is used to carry the Data from the memory.
Control bus : This is used to carry the Control signals like RD/WR, Select etc.
16⟩ What’s the speed and device maximum specs for Firewire?
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.
17⟩ How many bit combinations are there in a byte?
Byte contains 8 combinations of bits.
18⟩ What is 1st / 2nd / 3rd / 4th generation processor?
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.
19⟩ Name the processor lines of two major manufacturer?
High-end: Intel - Pentium (II, III, 4), AMD - Athlon. Low-end: Intel - Celeron, AMD - Duron. 64-bit: Intel - Itanium 2, AMD - Opteron.
20⟩ What are the various registers in 8085?
Accumulator register, Temporary register, Instruction register, Stack Pointer, Program Counter are the various registers in 8085
