1. Generic products Stand-alone systems that are marketed and sold to any customer who wishes to buy them • Examples•PC software such as graphics programs•Pro- ject management tools•CAD software•Software for specif- ic markets such as appointments systems for dentists. 2. Customized ...
1 generic products stand alone systems that are marketed and sold to any customer who wishes to buy them • examples•pc software such as graphics programs•pro ject management tools•cad software•softw
1. Generic products Stand-alone systems that are marketed and sold
to any customer who wishes to buy them
• Examples•PC software such as graphics
programs•Pro- ject management tools•CAD
software•Software for specif- ic markets such as
appointments systems for dentists.
2. Customized tem engineer- ing?
products
3. What is soft-
ware?
4. What are the at-
tributes of
good software?
5. What is software
engineering?
6. What are the fun-
damental soft-
ware engineering
activities?
7. What is the dif-
ference between
software engi-
neering and
com- puter
science?
8. What is the dif-
ference between
software engi-
neering and sys-
1/
, SOFTWARE ENGINEERING
TEST
Software that is Good software should deliver the required
commissioned by functionality and performance to the user and
a specific should be maintainable, dependable and usable.
customer to
meet their own Software engineering is an engineering
needs. discipline that is concerned with all aspects of
•Examples - software production.
embedded
control Software specification, software development,
systems, air traffic software validation and software evolution.
control software,
traffic monitoring
sys- tems.
Computer science focuses on theory and
Computer fundamentals; software engineering is
programs and concerned with the practicalities of developing
associated and delivering useful software.
documentation.
Soft- ware
products may be
developed for a System engineering is concerned with all aspects
particular of com- puter-based systems development
customer or may including hardware, software and process
be developed for a engineering. Software engineering is part of this
general market. more general process.
2/
, SOFTWARE ENGINEERING
TEST
9. What are the Coping with increasing diversity, demands for
key challenges reduced delivery times and developing
fac- ing trustworthy software.
software en-
gineering?
10.What are the Roughly 60% of software costs are development
costs,
costs of software 40% are testing costs. For custom software,
evolution
engineering? costs often exceed development costs.
11.What are the While all software projects have to be
best software professionally man- aged and developed,
en- gineering different techniques are appropriate for different
tech- niques and types of system. For example, games should
meth- ods? always be developed using a series of prototypes
whereas safety critical control systems require a
complete and ana- lyzable specification to be
developed. You can't, therefore, say that one
method is better than another.
12. Acceptability Software must be acceptable to the type of users
for which it is designed. This means that it must
be understandable, usable and compatible with
other systems that they use.
13.Stand-alone ap- systems
plications
16.Batch process- ing systems
14.Interactive
trans- action-
based ap-
plications
15.Embedded
con- trol
3/
, SOFTWARE ENGINEERING
TEST
These are These are business systems that are designed to
application process data in large batches.
systems that run They process large numbers of individual inputs
on a local to create corresponding outputs.
comput- er, such
as a PC.
They include all
necessary
functionality and
do not need to be
connected to a
network.
Applications that
execute on a
remote computer
and are accessed
by users from
their own PCs or
terminals.
These include
web applications
such as e-
commerce ap-
plications.
These are
software control
systems that
control and man-
age hardware
devices.
Numerically,
there are
probably more
embedded
systems than any
other type of
system.
4/
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