Microprocessor
Which one of the following is not correct?

 An interrupt signal is required at the start of every program
 Bootstrap is a technique or device for loading first instruction
 An instruction is a set of bits that defines a computer operation
 Bus is a group of wires

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Microprocessor
Assertion (A): Negative values of incremental operator in DO loop are allowed in Fortran 77 but not in earlier versions of Fortran. Reason (R): Fortran 77 has better array facilities than earlier versions of Fortran.

A is correct R is wrong
A is wrong R is correct
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A

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Microprocessor
Program counter in a digital computer

 Counts the number of times the loops are executed.
 Points the memory address of the next instruction to be fetched.
 Counts the numbers of programs run in the machine.
 Counts the number of times a subroutine is called.

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Microprocessor
The correct sequence of steps in the instruction cycle of a basic computer is

 Fetch, Execute, Decode and Read effective address.
 Fetch, Read effective address, Decode and Execute.
 Fetch, Decode, Read effective address and, Execute.
 Read effective address, Decode, Fetch and Execute.

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Microprocessor
When RET instruction is executed by any subroutine then

 the PC will be incremented after the execution of the instruction.
 without any operation, the calling program would resume from instruction immediately following the call instruction.
 without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.
 the top of the stack will be popped out and assigned to the PC.

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