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7315183
5b- Off-the shelf / Custom written software
Descrição
A level, A2 IT (Chapter 5) Mapa Mental sobre 5b- Off-the shelf / Custom written software, criado por Gladys Mba em 04-01-2017.
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ict
ocr
a2
a-level
chapter 5
it
chapter 5
a level, a2
Mapa Mental por
Gladys Mba
, atualizado more than 1 year ago
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Criado por
Gladys Mba
mais de 7 anos atrás
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Resumo de Recurso
5b- Off-the shelf / Custom written software
Off the shelf
Positives
Help is readily available in online discussion groups and training courses
Tested by many individuals. Most bugs identified and corrected with fixes released.
More reliable software
Immediately available
Choice between packages
Uses standard file formats
More likely for upgrades to be released
Support for new peripheral and operating systems
Customer is likely to be familiar with new software
Needs to meet needs of lots of costumers
Negatives
Cost can be one off or a yearly rental. Costs will increase is used by many stations
May not fit purpose without having to be altered or edited. Some needs of certain costumers will not be met.
Likely to be larger than costume-written solutions
May have many redundant features taking computer memory. (bloatware)
Custom written
Postives
End user owns the software entirely and can sell it.
Will fit purpose precisely
Takes a lot of time to analysis and develop
End user has a lot of choice and influence on the system
Less bloatware from unnecessary features=> Smaller than off-the-shelf option => Less memory/storage taken
Negatives
Expensive as people need to be hired to write software
No support if original writers stop supporting the software or go out of business
Problems if analysis was incorrect or wanted features weren't specified
Only tested by a few people => many unidentified bugs in early stages => less reliable
May not have major upgrades or support drivers for new peripherals. May not use recognised file format.
User unlikely be familiar with software
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