Question about HP 12c Calculator

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HP12c showed expected display for low battery (star in lower left), put new batteries in and could not get any display at all. Took betteries out of mine (working great!) and now the one not working shows a display of numbers in reverse and other info below the numbers such as "USER f g BEGIN GRAD D MY C PRGM". Entire display is completely filled with this garbage. Is this HP 12c dead? Ted Bourdon

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Resetting the calculator using the keyboardThe easiest reset is done from the keyboard. To reset the calculator, follow the procedures below in the order presented.

  1. Press ON to turn off the calculator.
  2. Press and hold [ - ] .
  3. Press and release ON .
  4. Release [ - ] .
  5. The screen will display “Pr Error
  6. The calculator will reset to the default settings, and the memory will be erased.

Posted on Aug 07, 2010

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