We will utilize a hybrid evaluation framework combining ISO 9241-11 (Usability) and the Technology Acceptance Model (TAM) (Adoption).
- ISO 9241-11: Focuses on Effectiveness (Task Success), Efficiency (Time-on-Task), and Satisfaction (SUS Score).
- TAM: Focuses on Perceived Usefulness and Perceived Ease of Use to validate educational value.
- Target Audience: Students / Peers
- Sample Size: 5-10 users (Standard for identifying 80% of usability problems)
Instructions to User: "Please perform the following tasks while speaking your thoughts aloud. Do not worry about making mistakes; we are testing the system, not you."
| Task ID | Task Name | Scenario / Instruction | Success Criteria |
|---|---|---|---|
| T01 | Onboarding | "Register a new account and log in to the dashboard." | User lands on the dashboard/roadmap page. |
| T02 | Learning | "Navigate to the 'Lessons' section and start the first lesson." | User successfully opens a lesson content page. |
| T03 | Tools | "Use the Calculator or Converter tool to solve a binary problem." | User inputs data and receives a correct result. |
| T04 | Visualization | "Open the Karnaugh Map tool and interact with the grid." | User successfully toggles a cell or generates an expression. |
| T05 | Assessment | "Take a short assessment or quiz." | User submits the quiz and sees their result/feedback. |
Rate the following statements on a scale of 1 to 5 (1 = Strongly Disagree, 5 = Strongly Agree)
- I think that I would like to use this system frequently.
- I found the system unnecessarily complex.
- I thought the system was easy to use.
- I think that I would need the support of a technical person to be able to use this system.
- I found the various functions in this system were well integrated.
- I thought there was too much inconsistency in this system.
- I would imagine that most people would learn to use this system very quickly.
- I found the system very cumbersome to use.
- I felt very confident using the system.
- I needed to learn a lot of things before I could get going with this system.
Rate on a scale of 1 to 5 (1 = Strongly Disagree, 5 = Strongly Agree)
Perceived Usefulness: 11. Using Bitwise improves my understanding of computer architecture concepts. 12. The interactive tools (K-Map, Calculator) make learning more effective than traditional methods. 13. I find Bitwise useful for my studies.
Perceived Ease of Use: (Covered by SUS questions 3, 7, and 9 above)
- What was the most difficult part of using the application?
- What feature did you find most helpful?
- Do you have any suggestions for improvement?
| Metric | Framework Component | How to Measure |
|---|---|---|
| Task Success Rate | ISO 9241-11 (Effectiveness) | % of tasks completed without critical errors. |
| Time-on-Task | ISO 9241-11 (Efficiency) | Average time taken to complete specific tasks (e.g., T03, T04). |
| SUS Score | ISO 9241-11 (Satisfaction) | Standard calculation (Score * 2.5). Target: >68. |
| Perceived Usefulness | TAM (Adoption) | Average score of Part B questions. |