[amp_mcq option1=”Index register” option2=”Memory address register” option3=”Program counter” option4=”Instruction register E. None of the above” correct=”option3″]
The correct answer is C. Program counter.
A program counter (PC) is a register in a computer processor that indicates the address of the instruction that the processor is currently executing. The PC is incremented after each instruction is executed, so it always points to the next instruction that should be executed.
An index register is a register that is used to store an index value. An index value is a value that is used to select a particular element from an array.
A memory address register (MAR) is a register in a computer processor that stores the address of a memory location that is being accessed. The MAR is used in conjunction with the memory data register (MDR) to read data from or write data to memory.
An instruction register (IR) is a register in a computer processor that stores the instruction that is currently being executed. The IR is used to decode the instruction and to control the execution of the instruction.
None of the above is the correct answer because it does not match any of the options.