Brickworks+Phase+Two



=__**PACT ANALYSIS**__=

*What is the Purpose of the activity?

 * Temporal Aspects** (1-4)

1) - how regular or infrequent activities are - need to make sure infrequent tasks are easy to learn or remember

2) Time Pressure, peaks and troughs of working 3) Activities that take place in a single action, others that are inturupted 4) The response time needed from the system must be considered

5) whether they can be carried out alone or are essentially concerned with working with others
 * Cooperation** (5)

6) Well- defined tasks need different designs from more vague tasks - Must be well defined, accomplished with a simple step-by-step design
 * Complexity** (6)


 * Safety- Critical** (7-8)

7) Safety critical- any mistake could result in an injury or a serious accident, others less so. Make sure it is safe

8) must consider when people make mistakes and errors, design for such circumstances


 * The Nature of the Content** (9-10)

9) Consider data requirements of the activity, what will you need (ex. alphabetic input = keyboard)

10) Just as important as data is the media that an activity requires. Think of display

**Design Steps**

 * Requirements
 * Conceptual Design
 * Prototyping and Envisioning
 * Physical Design
 * Evaluation