Data processing system with user definable mathematical function

Details Data processing system with user definable mathematical function Data processing system with user definable mathematical function

1991-11-26

1994-02-08

Smith, Jerry

Boots, shoes, and leggings

G06F 300

Patent

active

052854000

ABSTRACT:
A user definable mathematical function is implemented on a data processing system including a data terminal. The user definable mathematical function includes a user definable mathematical formula having at least one operand which is as yet unspecified or undetermined, but which will be retrieved from a source or location specified in the mathematical function. Execution of the user defined mathematical function is initiated by a data terminal selector device associated with the user definable mathematical function. Upon execution of the user defined mathematical function, a variable value is retrieved from the specified source and substituted for the unspecified operand in the user defined mathematical formula. The user defined mathematical formula is executed and a result of the execution provided. A method for providing and using such a user definable mathematical function is also provided.

REFERENCES:
patent: 4145742 (1979-03-01), Olander, Jr. et al.
patent: 4902881 (1990-02-01), Janku
"Excel in Business" by Douglas Cobb and Allan McGuffer, 1989, p. 94.

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