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Page 1

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By Ross Evans & Nicholas Wills




Computing Revision
Input Device ­ A device that allows the user to enter data into the system. E.g. Mouse /
keyboard
Output Device ­ A device that presents data to the user. E.g. Monitor / speakers
Storage Device ­ A device that keeps data…

Page 2

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By Ross Evans & Nicholas Wills




Anti-virus Utility­ Checks for viruses and removes them


Packet Switching ­ Packets (labelled / destination) are sent following the most convenient
path, this means packets may use different routes. When a packet reaches a machine along a network
the label is read. If that…

Page 3

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By Ross Evans & Nicholas Wills




OMR ­ Optical Mark recognition, the process of capturing human marked data from documents
or forms such as surveys and tests.
OCR ­ Is the electronic translation of scanned images of handwritten, typewritten or printed
text into machine ­ encoded text; to be edited…

Page 4

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By Ross Evans & Nicholas Wills




T ­ Technical Feasibility, Is the proposed system possible? Does the technology exist to make
it?
E ­ Economical Feasibility, Is the proposed system within the budget? How much will it cost?
L ­ Legal Feasibility, Is the proposed system within the law?
O…

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