Microprocessor
Each instruction in an assembly language program has the following fields 1. Label field 2. Mnemonic field 3. Operand field 4. Comment field What are the correct sequence of these fields?

 1, 3, 2 and 4
 2, 4, 1 and 3
 1, 2, 3 and 4
 2, 1, 4 and 3

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Microprocessor
Which one of the following is not correct?

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

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Microprocessor
Program counter in a digital computer

 Counts the number of times a subroutine is called.
 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 the loops are executed.

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