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A browser-based hand calculator with responsive design, animated buttons, and error-handling to prevent user from ever entering problematic operations.
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Multi-Function Calculator With Robust Error Proofing

  • Logic loops prevent user from entering input that would throw most parsing errors.
  • Buttons flash red if pushing it would have created an error.
  • Memory log saves all entries (not answers, but the entry that yielded the answer).
  • Given sequential identical entries, only the most recent one will be stored in the memory.
  • Clear button displays "C" and clears line if there is an entry in the display area.
  • If the display is empty, the clear button will change to "CM" and will clear the memory if pressed.
  • Four color animation effects.
  • Semi-responsive design fits calculator to almost any window size.
  • Keyboard support.
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