Computer Basic Information
Which kind of devices allows the user to add components and capabilities to a computer system?

Output devices
Storage devices
Expansion slots
Input devices
System boards

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Computer Basic Information
In a punched card system, data is processed by a

None of these
keypunch machine, sorter, and posting machine
accounting machine, keypunch machine, and sorter
accounting machine, posting machine, and billing machine
sorter, posting machine, and billing machine

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