An accumulator stores data currently being used by the ALU

An accumulator stores data currently being used by the ALU

• A. RAM
• B. ROM
• C. Accumulator
• D. Program Counter

Answer: (C)

The accumulator is a register that holds the value the arithmetic logic unit is currently working with. When the ALU performs an operation, it uses the value in the accumulator as one operand (often the other operand is also taken from a register or memory), and the result is typically written back into the accumulator. This arrangement keeps the active data in a fast, small storage area so calculations can proceed quickly without repeatedly fetching from main memory. RAM is the main memory used to store data and instructions over time, not the immediate workspace of the ALU. ROM stores firmware or program code and is read-only during operation, not the temporary data the ALU manipulates. The program counter tracks which instruction to fetch next, not the data being processed by the ALU.

The accumulator is a register that holds the value the arithmetic logic unit is currently working with. When the ALU performs an operation, it uses the value in the accumulator as one operand (often the other operand is also taken from a register or memory), and the result is typically written back into the accumulator. This arrangement keeps the active data in a fast, small storage area so calculations can proceed quickly without repeatedly fetching from main memory.

RAM is the main memory used to store data and instructions over time, not the immediate workspace of the ALU. ROM stores firmware or program code and is read-only during operation, not the temporary data the ALU manipulates. The program counter tracks which instruction to fetch next, not the data being processed by the ALU.