Casio Computer Co., Ltd.

Hidekazu Tanaka

Kazuhiko Arikawa

Syunsuke Akaza

Mitsuru Okano

Makoto Ozawa

Osamu Negishi

Takuya Mashimo

Yoshinori Asayama

Akihiro Handa

Shunsuke Akaza

Kyoko Lin

A graph displaying device and method whereby when functional expression data for producing graphs and the conditions of displaying the graphs are set, graphs for functional expressions data input in accordance with the conditions are displayed in corresponding colors on a display. First, functional expression data and corresponding color data which designate display colors of the graphs are input in corresponding relationship. In addition, range data which display coordinates and color data designating display colors of coordinates involved in the range data are input together. In response to this operation, the graphs for the input functional expression data are produced with the range data to which the color data are designated, the last-mentioned color data corresponding to color data which correspond to the functional expression data. The produced graphs and the coordinates are displayed in the corresponding designated colors.

Graph displaying devices and methods

A graph display device which includes an expression input section for inputting functional expression data, an expression color setting for setting a display color for the functional expression data input by the expression input section, and an expression display section for displaying the input functional expression data in the display color set by the expression color setting section. A graph producing section produces a graph for the functional expression data input by the expression input section based on the input functional expression data, and a graph display section display the graph produced by the graph producing section in the same display color as that set for the functional expression data.

Graph display devices

A graph display apparatus includes a plurality of functional formulas to be displayed as graphs and their coordinate ranges are stored in a memory by operating numeric .multidot. symbol keys on a key input unit. The plurality of stored formulas are displayed on a display unit by operating a 'list' key. When a plurality of arbitrary formulas are designated and a 'synthesis' key is operated, the graphs of the designated formulas are calculated and displayed on a single coordinate system in accordance with coordinate ranges of the formula which is designated first. When the plurality of arbitrary formulas are designated and a 'division' key is operated, the functional formulas are displayed on different coordinate systems in accordance with corresponding coordinate ranges. When the graphs of a plurality of input formulas are calculated and displayed, the individual graphs can be appropriately synthesized or divided and can be displayed in comparison with each other.

Graph display apparatus for different coordinate systems

Growing community of inventors

Fussa, Japan

Hidekazu Tanaka