What is the computer’s primary working memory, in which program instructions and data are stored temporarily so that they can be accessed directly by the CPU via the processor’s high-speed external data bus?单项选择题
A
Flash memory
B
Random access memory
C
Read-only memory
D
Cache memory

Question

What is the computer’s primary working memory, in which program instructions and data are stored temporarily so that they can be accessed directly by the CPU via the processor’s high-speed external data bus?单项选择题

A

Flash memory

B

Random access memory

C

Read-only memory

D

Cache memory

BlackTom AI · Accepted Answer

The question asks about the computer’s primary working memory where program instructions and data are stored temporarily for direct access by the CPU via the processor’s high-speed data bus.
Option 1: Flash memory. This type of storage is non-volatile and typically used for long-term storage like USB drives or SSDs, not as the primary working memory that the CPU accesses directly during execution.
Option 2: Random access memory. This is the correct concept for volatile, temporary storage that holds currently running programs and data so the CPU can read and write quickly via the high-speed data bus.
Option 3: Read-only memory. ROM is non-volatile and holds firmware or bootstrap code; it does not serve as the system’s primary working memory where active program data resides.
Option 4: Cache memory. Cache is a very small, extremely fast memory close to the CPU used to speed up access to frequently used data and instructions, but it complements RAM rather than replacing it as the main working memory.
In summary, while ROM, flash, and cache have important roles in a computer’s memory hierarchy, the description in the question corresponds to Random access memory, which serves as the main temporary storage for active processes during operation.

What is the computer’s primary working memory, in which program instructions and data are stored temporarily so that they can be accessed directly by the CPU via the processor’s high-speed external data bus?单项选择题

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