Computer Basic Information
The 7-bit ASCII code widely used

For coding external memory
In IBM mainframe models
None of these
In large machines produced by non-IBM vendors
For data communication work

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Computer Basic Information
Which of the following is not true of a magnetic disk?

It does not provide an automatic audit trail
It is expensive relative to magnetic tape
Users can easily update records by writing over the old data
All of these
It provides only sequential access to stored data

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