Вопрос № 191049 - Английский язык

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A PC main memory is fast storage that is directly accessible by the CPU, and is used to store the currently executing programme and immediately needed data. PCs use semiconductor random access memory (RAM) of various kinds such as DRAM or SRAM as their primary storage. The main memory is much faster than mass storage devices like hard disks or optical discs, but it is usually volatile, it does not retain its contents (instructions or data) in the absence of power.
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What is the disadvantage of main memory?

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CPUs contain a special set of memory cells called registers that can be read and written much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access the main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to ALU and control units) it greatly increases the computer speed.
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CPUs contain a special set of memory cells called registers that can be read and written much more rapidly than …

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