MHz stands for megahertz, which means millions of execution cycles per second.
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Main memory has several names，among which are RAM, primary memory，or simply Memory.
A. 对
B. 错
A byte usually occupies 9 bite.
A. 对
B. 错
The function of the ninth chip in a bank of memory is usually to check for errors.
A. 对
B. 错
ROM chip can’t be changed while PROM chip is programmable.
A. 对
B. 错
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