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
their access times are about the same
they have about the same storage capacity
None of these

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Computer Basic Information
The function of CPU is

to provide external storage of text
None of these
to communicate with the operator
to provide a hard copy
to read, interpret and process the information and instruction

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