Compact electronic calculator having graph display function
AssigneeCasio Computer Co., Ltd.
InventorsKazuyoshi Watanabe, Hiroyuki Yoshino, Junichi Maeda, Osamu Negishi
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Abstract
A compact electronic calculator having a graph display function of the invention has function keys for inputting functional formulas, a memory for storing an input functional formula, range input keys for inputting range data for variables in the formula, a memory for storing the range data, and a read-only memory (ROM) for storing a control program which sequentially calculates the values of the dependent variable for the independent variable with an ALU in accordance with the functional formula and the range data and which displays the calculated values on a display component.
Claims10
An electronic calculator having a graphic display function, comprising:
- input means for inputting a functional formula having an independent variable and a dependent variable, and for inputting range data corresponding to values of the independent and the dependent variables of the functional formula;
- functional formula storage means, coupled to said input means, for storing the functional formula;
- range data storage means, coupled to said input means, for storing the range data;
- operation means, coupled to said functional formula storage means and said range data storage means, for sequentially computing the values of the independent and the dependent variables based on the functional formula and the range data, and for obtaining display position data in response to computed values of said variables;
- display means for performing a graph display;
- and
- display control means, coupled to said operation means and said display means, for controlling said display means to display the graph of the functional formula based on the display position data obtained by said operation means.
Dependencies are inferred from the claim text.