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In a microprocessor the register which holds the address of the next instruction to be fetched is
- a)accumulator
- b)program counter
- c)stack pointer
- d)instruction register
Correct answer is option 'B'. Can you explain this answer?
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Explanation:
A microprocessor is a central processing unit (CPU) that is contained on a single integrated circuit (IC) chip. It is responsible for processing instructions and executing them. The instructions are stored in memory, and the microprocessor fetches them one by one and executes them. The register which holds the address of the next instruction to be fetched is called the Program Counter (PC).
Program Counter (PC):
The Program Counter (PC) is a register that holds the memory address of the next instruction to be fetched. The PC is automatically incremented after each instruction is fetched, so that it points to the next instruction in sequence. The PC is also used to calculate the address of branch instructions.
Accumulator:
The Accumulator (AC) is a register that holds the data being processed by the microprocessor. The AC is used for arithmetic and logic operations, and it is also used to store intermediate results.
Stack Pointer:
The Stack Pointer (SP) is a register that points to the top of the stack. The stack is a region of memory used for temporary storage of data during program execution. The SP is automatically incremented or decremented as data is pushed or popped from the stack.
Instruction Register:
The Instruction Register (IR) is a register that holds the current instruction being executed by the microprocessor. The IR is loaded with the instruction from memory during the fetch cycle, and it is used to decode the instruction during the execute cycle.
Therefore, option 'B' is the correct answer.
A microprocessor is a central processing unit (CPU) that is contained on a single integrated circuit (IC) chip. It is responsible for processing instructions and executing them. The instructions are stored in memory, and the microprocessor fetches them one by one and executes them. The register which holds the address of the next instruction to be fetched is called the Program Counter (PC).
Program Counter (PC):
The Program Counter (PC) is a register that holds the memory address of the next instruction to be fetched. The PC is automatically incremented after each instruction is fetched, so that it points to the next instruction in sequence. The PC is also used to calculate the address of branch instructions.
Accumulator:
The Accumulator (AC) is a register that holds the data being processed by the microprocessor. The AC is used for arithmetic and logic operations, and it is also used to store intermediate results.
Stack Pointer:
The Stack Pointer (SP) is a register that points to the top of the stack. The stack is a region of memory used for temporary storage of data during program execution. The SP is automatically incremented or decremented as data is pushed or popped from the stack.
Instruction Register:
The Instruction Register (IR) is a register that holds the current instruction being executed by the microprocessor. The IR is loaded with the instruction from memory during the fetch cycle, and it is used to decode the instruction during the execute cycle.
Therefore, option 'B' is the correct answer.
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In a microprocessor the register which holds the address of the next instruction to be fetched isa)accumulatorb)program counterc)stack pointerd)instruction registerCorrect answer is option 'B'. Can you explain this answer?
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