How to Complete this Lesson

Complete the following learning activities: (3–3.5 hours total)

  1. Watch Embedded System Safety and Therac 25 (3 minutes)
  2. Read “Medical Devices: The Therac-25 story” (excerpt from Safeware: System Safety and Computers) (copy) (150–180 minutes)
  3. Participate in the synchronous session during the class meeting time (optional)
  4. Complete the quiz (5–8 minutes)
  5. Work on the specification (30 minutes)
    • Review the sections written by others, ensuring that the specification as a whole is unambiguous

Due

As a reminder, the following is due this lesson:

Resources

Discussion questions

Further Reading

Leveson and Turner, “An Investigation of the Therac-25 Accidents,” Computer, Vol. 26, No. 7, pp. 18–41, July 1993