Scientific calculator with coordinate transformation and single

Details Scientific calculator with coordinate transformation and single Scientific calculator with coordinate transformation and single

1993-01-25

1994-08-02

Nguyen, Long T.

Boots, shoes, and leggings

36471011, G06F 300

Patent

active

053351932

ABSTRACT:
A scientific calculator capable of function calculation including: an input device for entering a numerical value and a functional formula; a calculation device for calculating two calculation result values based on the numerical value and the functional formula; a storage device for storing the numerical value entered and the calculation result values; a numerical value display unit for displaying one numerical value or one calculation result value; a guidance display unit for displaying a character and a symbol representing a calculation process and the meaning of the numerical value; a symbol display unit for displaying two types of display symbols indicating that, upon display of one of two calculation result values at the numerical value display unit, the other calculation result value is stored in the storage device; and retrieval device for retrieving, upon display of one of .the two types of display symbols, the other numerical value or the calculation result value from the storage device in response to the replacing command, thereby replacing the numerical value or the calculation result value thus retrieved from the storage device with the numerical value or the calculation result value displayed at the moment on the numerical value display units.

REFERENCES:
patent: 4511987 (1985-04-01), Caldwell et al.
patent: 5175700 (1992-12-01), Vogel et al.

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