Reasons for Choosing Languages

Июль 22, 2022

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Reasons for Choosing Languages

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2. BTEC National for IT Practitioners Unit 6: Software Design & Development Reasons for Choosing Programming Languages
3. Objectives Understand what the reasons are for choosing to use different programming languages Produce a brochure
4. Assessment Criteria… Describe the factors influencing the choice of programming language (U6 P2)
5. Reasons for Choice of Language Organisational policy Suitability in terms of features and tools Availability of
6. Organisational Policy Some companies (particularly large ones) have an organisational policy as to what computer hardware
7. Suitability in terms of Features & Tools Two questions have to be answered when deciding on
8. Availability of Trained Staff In a commercial programming environment, the programmers who work for a particular
9. Reliability Some programming languages have features built into them which help to make the programs more
10. Development & Maintenance Costs Cost of developing and maintaining programs is an important consideration when embarking
11. Expandability Some software systems have to support hundreds or even thousands of simultaneous users Programs written
12. Task… Produce a brochure to describe the factors that influence the choice of programming language.
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BTEC National for IT Practitioners Unit 6: Software Design & Development
Reasons for

Choosing Programming Languages

Слайд 3

Objectives
Understand what the reasons are for choosing to use different programming

languages
Produce a brochure in order to describe each reason providing an example of programming languages and their use

Слайд 4

Assessment Criteria…
Describe the factors influencing the choice of programming language (U6

P2)

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Reasons for Choice of Language
Organisational policy
Suitability in terms of features and

tools
Availability of trained staff
Reliability
Development and maintenance cost
Expandability

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Organisational Policy
Some companies (particularly large ones) have an organisational policy as

to what computer hardware and software is to be used
For example, a company might have a policy to use only Microsoft software because of the level of support that may be provided by such a large software vendor
Another company might have chosen to use Apple Macintosh machines, while another might have a policy to use open-source software such as Linux

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Suitability in terms of Features & Tools
Two questions have to

be answered when deciding on the suitability of a programming language:-
Will it work on the platform being used in the company?
Does it have appropriate features to suit the type of applications that have to be written?
Some programming languages have been specifically designed for particular types of applications

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Availability of Trained Staff
In a commercial programming environment, the programmers who

work for a particular company may already be skilled in using a particular language so that language may be the natural choice
For a project where staff need to be recruited to complete the programming, it should prove easier to recruit staff for a popular language rather than a less widely used one. So, this may also be a factor to be considered when deciding which language to use

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Reliability
Some programming languages have features built into them which help to

make the programs more reliable and less likely to crash
The best example of this is the Ada language – it was designed from the outset to include features which make it reliable
Ada is often used for safety-critical systems such as the fly-by-wire control system of the Boeing 777 aircraft

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Development & Maintenance Costs
Cost of developing and maintaining programs is an

important consideration when embarking on a software development project
Some languages have a reputation for cutting development costs by making it quick and easy to develop and maintain (update) programs
For example, in the 1980s, report program generator (RPG) was specifically designed to allow the speedy creation of reports

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Expandability
Some software systems have to support hundreds or even thousands of

simultaneous users
Programs written for interactive websites may need to support a very large number of users without crashing
Some languages expand or scale better than others and have features which support large systems

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Task…
Produce a brochure to describe the factors that influence the choice

of programming language.

Reasons for Choosing Languages

Содержание

BTEC National for IT Practitioners Unit 6: Software Design & DevelopmentReasons for

ObjectivesUnderstand what the reasons are for choosing to use different programming

Assessment Criteria…Describe the factors influencing the choice of programming language (U6

Reasons for Choice of LanguageOrganisational policySuitability in terms of features and

Organisational PolicySome companies (particularly large ones) have an organisational policy as

Suitability in terms of Features & Tools Two questions have to

Availability of Trained StaffIn a commercial programming environment, the programmers who

ReliabilitySome programming languages have features built into them which help to

Development & Maintenance CostsCost of developing and maintaining programs is an

ExpandabilitySome software systems have to support hundreds or even thousands of

Task…Produce a brochure to describe the factors that influence the choice

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