Computer Basic Information
Binary numbers need more places for counting because:

0's and 1's can be added in front of them
0's and 1's have to be properly placed
They are always big numbers
Binary base is small
None of these

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

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

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