1 (a) (i)
Define what is meant by a secondary storage device.
(ii)
A sixth form student has a stand-alone desktop PC at home and also uses the computers
at school.
Name
three
different types of secondary storage device which she might have and give
a use for each.
Device 1 ………………………………………………………………………………………………………
…….
Use …………………………………………………………………………………………………………..
……….
………………………………………………………………………………………………………………
………….
Device 2 ………………………………………………………………………………………………………
…….
Use …………………………………………………………………………………………………………..
……….
………………………………………………………………………………………………………………
………….
Device 3 ………………………………………………………………………………………………………
…….
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Use
[6]
(b)
Describe the use of interrupts and buffers when data is transferred from primary memory to a
storage device.
[4]
3
Turn over
© OCR 2009
2
A system for keeping track of goods in a warehouse uses barcode readers to input data about
goods going in and out of the warehouse.
(a) (i)
Describe how a barcode can be used to store data.
(ii)
Describe how the data can be input to the system from the barcodes.
(b)
Describe how the data collected is used to update the information stored about the stock in
the warehouse.
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