Set - 1

Question 6 :

What happens when HLT instruction is executed in processor?

Answer :

The Micro Processor enters into Halt-State and the buses are tri-stated.

Question 7 :

Which Stack is used in 8085?

Answer :

LIFO (Last In First Out) stack is used in 8085.In this type of Stack the last stored information can be retrieved first

Question 8 :

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.

Question 9 :

What are the various registers in 8085?

Answer :

Accumulator register, Temporary register, Instruction register, Stack Pointer, Program Counter are the various registers in 8085

Question 10 :

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.