Computer Basic Information
The magnetic disks and drums are like recirculating shift registers because

stored data is available for reading over and over again in the same order.
their storage is non volatile
None of these
they have about the same storage capacity
their access times are about the same

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Computer Basic Information
Why is the width of the data bus so important to the processing speed of a computer?

The wider it is, the greater the computer's processing speed
The narrower it is, the greater the computer's processing speed
The wider it is, the slower the computer's processing speed
The data bus isn't important to the processing speed of a computer
The wider it is, the more data that can fit into main memory

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