Zusammenfassung der Ressource
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