Calculator

Details Calculator Calculator

1998-04-02

2000-10-17

Powell, Mark R.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06T 1120

Patent

active

061339245

ABSTRACT:
It is an object of the invention to solve problems with a calculator capable of displaying a graph of a function in that the characteristics of a graph displayed by inputting a function can not be recognized when a desired display range is not at an appropriate value and in that a value to change the display range has had to be input on a trial and error basis, which has made the operation very complicated. A calculator according to the invention displays a graph of a function on a reduced scale, further displays buttons for increasing and decreasing display ranges of an X-axis and a Y-axis around the graph and changes the graph of the function and displays it again in response to instructions by the user on the buttons. This makes it possible to correct the display ranges of the graph of the function easily.

REFERENCES:
patent: 4794554 (1988-12-01), Tamiya
patent: 5535317 (1996-07-01), Tanaka et al.
patent: 5557718 (1996-09-01), Tsuneyoshi et al.
patent: 5586060 (1996-12-01), Kuno et al.
patent: 5712656 (1998-01-01), Ikeda et al.
patent: 5758035 (1998-05-01), Tsuneyoshi

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