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Math menu user interface on a calculator

  • US 8,464,179 B2
  • Filed: 10/01/2008
  • Issued: 06/11/2013
  • Est. Priority Date: 07/30/2008
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • a processor;

    a keyboard coupled to the processor, said keyboard comprising a mathematical function key and an arrow key; and

    a display coupled to the processor, said display having only two lines with one line used for numbers as well as text and another line used for numbers only;

    wherein, when said mathematical function key is pressed, said processor causes said display to display a sequence of at least one math function and at least one math menu choice upon a user repeatedly pressing the arrow key, wherein the at least one math menu choice describes a group of one or more math functions or sub-menu choices and is not itself a math function; and

    wherein, for each math function displayed on the display, the processor concurrently also causes the result of the math function to be displayed without the user pressing another key;

    wherein the at least one math function and at least one math menu choice are displayed one at a time.

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