The Main Change in the Therac-25 Over Previous Versions Like

question 12

Multiple Choice

The main change in the Therac-25 over previous versions like the Therac-6 and Therac-20 is that the Therac-25

• A) used a different source of radiation that is more dangerous to human health.
• B) had no mechanical interlocks to set the amount of radiation; radiation amount was controlled by software.
• C) was much more difficult to operate properly.
• D) None of the above

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