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# Essential Terms — C05

The Hamilton and Alexandra College · Year 12 · 2026

A glossary of every term you need to recognise and use correctly across C05. Click a term to expand its definition. If you cannot define a term in your own words, you cannot use it with confidence when it counts.

```mermaid
flowchart TD
    R["C05 vocabulary<br/>31 terms"]
    R --> G0["Design tools<br/>7 terms"]
    R --> G1["Design principles<br/>7 terms"]
    R --> G2["UX characteristics<br/>4 terms"]
    R --> G3["Usability and accessibility<br/>5 terms"]
    R --> G4["Evaluation words<br/>6 terms"]
    R --> G5["Thinking styles<br/>2 terms"]
```

*Where the C05 vocabulary sits, and how much of it is in each group — the 6 sections below follow the same order. Revise the heavy groups first.*

---

## Design tools

>| ### Annotate
>| Add comments to a document or diagram.

>| ### Data dictionary (software design)
>| Used to plan storage structure; provides specifications of variables, arrays and GUI objects, with reference to data types, data structures and data sources.

>| ### Design ideas
>| Conceptual solutions or creative approaches intended to address a specific problem or requirement in a design process.

>| ### IPO chart
>| A tabular method of conceptualising how data is received, processed and returned, typically presented in a three-column table.

>| ### Mock-up
>| An annotated visual representation of the user interface of a software solution, used to aid in the design of an interface.

>| ### Object description
>| A design tool that describes all of the relevant properties, methods and events in an object or class.

>| ### Pseudocode
>| Code that designs algorithms in a clear, human-readable, language-independent format using Structured English.

---

## Design principles

>| ### Alignment
>| A design principle concerned with how elements are positioned relative to each other and the page, improving clarity and readability.

>| ### Balance
>| A design principle concerned with the distribution of visual weight across an interface, contributing to attractiveness and usability.

>| ### Contrast
>| A design principle concerned with the difference between elements that makes them stand out from each other, essential for accessibility and readability.

>| ### Design principles
>| Principles that influence the appearance and functionality of a solution, including alignment, balance, contrast, space, text formatting, usability and navigation.

>| ### Navigation
>| A design principle concerned with how users move through software, directly impacting efficiency and usability.

>| ### Space (white space)
>| A design principle concerned with the empty areas between and around elements, improving clarity, readability and reducing cognitive load.

>| ### Text formatting
>| A design principle concerned with how text appears and is structured in an interface, enhancing readability and supporting accessibility.

---

## UX characteristics

>| ### Affordance
>| The visual clues in an interface that tell users how they can interact with elements, making the software intuitive and self-explanatory through design.

>| ### Interoperability
>| The ability of software to work seamlessly with other systems, applications and devices, supporting efficiency by allowing smooth integration into existing workflows.

>| ### Usability
>| Ease of use to achieve specified goals in terms of efficiency, effectiveness and satisfaction.

>| ### User experience (UX)
>| The overall experience a user has when interacting with software, influenced by factors including affordance, interoperability, security and usability.

---

## Usability and accessibility

>| ### Accessibility
>| How easily the software can be used by those who experience disabilities.

>| ### Assistive technology
>| Any device or system that is designed for individuals who would otherwise find the task difficult or impossible.

>| ### Clarity
>| Ease of understanding.

>| ### Readability
>| The ease of understanding the text.

>| ### Universal design
>| Designing products that can be used by people with a wide range of abilities and disabilities.

---

## Evaluation words

>| ### Attractiveness
>| How pleasing something is to the viewer.

>| ### Communication of message
>| The process through which meaning is transferred.

>| ### Completeness
>| Nothing left out.

>| ### Effectiveness
>| Produces the expected result.

>| ### Efficiency
>| Economic use of resources with minimum waste.

>| ### Evaluation criteria
>| Rules set out during design that include effectiveness and efficiency criteria; based on the solution's requirements, which were defined during analysis.

---

## Thinking styles

>| ### Convergent thinking
>| Involves coming up with a single, well-established answer to a problem.

>| ### Divergent thinking
>| Involves exploring many possible solutions using spontaneous, free-flowing techniques.

---

## See also

- [C05 home page](/sd/C05/C05-home) — everything else for this criterion
- [Efficiency vs Effectiveness](/sd/C04/Efficiency%20vs%20Effectiveness) — the full VCAA lists: exactly 3 efficiency factors and 11 effectiveness factors; only the ones this glossary defines appear above
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