computer science

Software Design and Development

Software Design and Development is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Software Design and Development rather than just read about it. In short: Software Design and Development (SDD) is the study of designing and developing software. SDD is also a subject offered to senior high school students in Australia in university entrance exams such as the Higher School Certificate (HSC) and the Victorian Certificate of Education (VCE).

Key takeaways

Software Design and Development belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Software Design and Development to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Software Design and Development from memory before moving on to harder problems.

Reference excerpt

Software Design and Development (SDD) is the study of designing and developing software. SDD is also a subject offered to senior high school students in Australia in university entrance exams such as the Higher School Certificate (HSC) and the Victorian Certificate of Education (VCE).

Victoria

VCE Course In Victoria, the course in the VCE is known as Information Technology: Software Development.

New South Wales

HSC Course In New South Wales, the course was changed to Software Engineering in 2024 following a syllabus update. SE is separated into the Preliminary (Year 11) and HSC (Year 12) courses. A prerequisite for the HSC Course is successful completion of the Preliminary Course, which is the same for any other course in the HSC. The course also often requires a major project, in which students must plan, design and develop a software application. The course in NSW is set out in the NSW Board of Studies (now known as the New South Wales Education Standards Authority) HSC Software Design and Development syllabus document.

Preliminary Course Concepts and Issues in the Design and Development of Software (30%) Social and ethical issues Hardware and software Software development approaches Introduction to Software Development (50%) Defining the problem and planning software solutions Building software solutions Checking software solutions Modifying software solutions Developing Software Solutions (20%)

Course Structure Development and Impact of Software Solutions (15%)

Social and ethical issues Application of software development approaches Software Development Cycle (40%)

Defining and understanding the problem Planning and design of software solutions Implementation of software solutions Testing and evaluation of software solutions Maintenance of software solutions Developing a Solution Package (25%) Options (20%) One of the following options:

Programming paradigms, or The interrelationship between hardware and software

See also Information Processes and Technology, which is a similar course offered in the HSC.

References

External links Board of Studies Website

Worked examples

Example 1 — a first encounter with Software Design and Development

Start with the simplest possible case. Write down what Software Design and Development claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Software Design and Development before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Software Design and Development ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Software Design and Development

In research: Software Design and Development appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Software Design and Development in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Software Design and Development is common in secondary-school and first-year university syllabi. It links to neighbouring topics Education in Australia by subject, Information technology education, Vocational education in Australia, so understanding it makes those chapters shorter.
In everyday life: Look for Software Design and Development outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Software Design and Development in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Software Design and Development means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Software Design and Development out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Software Design and Development in simple terms?

Why does Software Design and Development matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Software Design and Development?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Software Design and Development.