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CPU FDE Cycle and Essential Registers Quiz

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CPU FDE Cycle and Essential Registers Quiz

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Questions and Answers

What is the primary function of the Program Counter (PC) register in the FDE cycle?

To display the address in RAM of the next instruction to be processed.

Which register stores the result of mathematical or logical calculations in the CPU?

The Accumulator (ACC) register

What is the purpose of the Memory Address Register (MAR) in the FDE cycle?

To store the address of the next instruction to be fetched from RAM

What happens to the instruction in the Memory Data Register (MDR) after it is transferred from RAM?

It is copied into the Current Instruction Register (CIR) Signup and view all the answers

What is the primary objective of the decode stage in the FDE cycle?

To understand the instruction retrieved from RAM Signup and view all the answers

Which register tracks the RAM address of the instruction that is to be fetched?

The Memory Address Register (MAR) Signup and view all the answers

What is the role of the CPU in the FDE cycle?

To process data and instructions for each program or service that requires its attention Signup and view all the answers

What happens to the instruction in the Current Instruction Register (CIR) after it is decoded?

It is executed (processed) by the CPU Signup and view all the answers

What is the primary function of the Fetch stage in the FDE cycle?

To retrieve the instruction from RAM Signup and view all the answers

What is the purpose of registers in the CPU?

To provide small storage spaces for temporary data Signup and view all the answers