Therac-25 Accidents: An Updated Version of the Original Accident Investigation Paper (by Nancy Leveson)

I have updated and changed slightly the original accident report. This version is from my book Safeware: System Safety and Computers published by Addison-Wesley. A postscript version of this Therac-25 paper can be obtained by clicking Postscript and a PDF version by clinking on .pdf
. If you are interested in my other papers or research on software safety, try my home page or the safety research pages .