Microprocessor

Microprocessor Viva Question with Answer

Q1) What is a Microprocessor ?

Ans: Microprocessor is a program controlled single chip devices, which fetches the instruction from memory, then decodes it and executes.

Q2) What is a Instruction set ?

Ans: Instruction set is the set of Instructions that a microprocessor can execute.

Q3) What is Bandwidth ?

Ans: Number of bits processed by processor in one instruction is its Bandwidth.

Q4) On what does Microprocessor speed depends on ?

Ans:  It depends on the Data Bus Width

Q5) What are mnemonics ?

Ans: Mnemonics are instructions or commands to perform a particular operation. Like MOV or ADD or SUB or MIV etc

Q6) What are flags in Microprocessor ?

Ans: There are different flags in microprocessor like carry flag, Interrupt flag, zero flag, parity flag, overflow flag, trace flag, direction flag etc

Q7) Name 1st/2nd/3rd/4th generation microprocessor ?

Ans: 1st generation ---- PMOS ---- 4 bits
       2nd generation ---- NMOS ---- 8 bits
      3rd generaton ---- HMOS ---- 16 bits
      4th generation ---- HCMOS ----32 bits

Q8) What is the maximum clock frequency of 8086 microprocessor ?

Ans:  Its 5MHz

Q9) What is Maskable and non- maskable interrupts ?

Ans: Interrupt that can be turned off by programmer is Maskable interrupts and those which can not be turned off by programmers are non maskable interrupts.

Q10) What is the disadvantages of Microprocessor ?

Ans: It has limitations on size data and most microprocessor does not support floating point operations.