Non-Functional Specifications

Non-functional Specifications, unlike functional ones, do not involve transforming inputs into outputs but are crucial for a software project's success.

These specifications set the development framework and affect user experience, focusing on the system's operation and performance rather than its functionality.

Non-functional specifications are from the user’s perspective in that they directly influence the standards for interface design including;

  • use of menus

  • use of frames to group items

  • use of colour

  • placement of common elements

  • wording of messages and the tone of the language

  • font to be used for prompts and user inputs

  • size and nature of icons

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