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______ access memory is the computer’s primary working memory, in which program instructions and data are stored so that they can be accessed directly by the CPU via the processor’s high-speed external data bus.

Question

BlackTom AI · Accepted Answer

The prompt asks to fill in the blank in the phrase describing the computer’s primary working memory. 
Option 1: Random. This is the correct choice because the standard term is Random Access Memory (RAM), which is the computer’s fast, volatile memory that stores instructions and data the CPU needs to access quickly. The phrase 'random access' means the memory can be read or written at nearly any location in roughly the same amount of time, enabling direct access by the CPU via the high-speed data bus. 
Option 2: Primary. While 'primary memory' is a term used in some contexts to describe main memory, the specific phrase in the question requires the descriptor that precedes 'access memory.' 'Primary access memory' is not the conventional designation, and it does not capture the intended meaning of uniform, random access times. 
Option 3: Risk. This choice does not fit the technical terminology at all; 'risk access memory' has no meaning in computer architecture and would mislead rather than describe the memory type used for active program execution. 
In summary, the only term that correctly completes the phrase and aligns with the widely used hardware concept is 'Random,' yielding Random Access Memory (RAM).

Blank ______ access memory is the computer’s primary working memory, in which program instructions and data are stored 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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