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Therac Case PowerPoint Presentation. And, best of all, most of its cool features are free and easy to use. Kenrick Mock Created Date: Use rapid prototyping languages and tools Calls routine to set the bending magnets 8 second latency 4. Ken McIsaac One last word….

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Poor management and poor communication among customers, designers, programmers, etc. Related More from user. The computer selects and implements an action without any human involvement.

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Something is clearly wrong. Software is easy to change. Use rapid prototyping languages and tools The computer tells the operator the options available.

Sets data entry complete flag Critical task treatment processor Treat 1. Therac 25 Lessons Engineering Ken McIsaac One last word….


Software Safety Case Study Medical Devices : Therac 25 and beyond Matthew Dwyer. – ppt download

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Software Safety Case Study Medical Devices : Therac 25 and beyond Matthew Dwyer.

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therac 25 case study ppt

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Therac 25 Incident – PowerPoint PPT Presentation

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therac 25 case study ppt

pp An Investigation of the Therac Accidents. Detects data entry 2. Social Implications of a Computerized Society – Have we become too dependent on computers? This is a medical machine that fires high energy radiation to destroy tumors. In each mode bending magnets had to be set before it fired 6 Problems with Therac 25 Problems in the design process Software reuse management Failure of testing Xtudy of the risk assessments Irresponsible usage 7 Therac 25 design problems Attempted to combine functionality from previous versions for lower cost Apparently no consultation with stakeholders – such as medical technicians Over confidence in the previous designs resulting in complacency 8 Software Reuse Therac 25 borrowed heavily from previous Therac designs.

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