The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 1984
Filed:
Jul. 06, 1981
Samir W Rizk, Lubbock, TX (US);
Stoddard S Millwright, Lubbock, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A data processing apparatus includes a novel method of entering the data for a function which requires two integral operands. First and second preselected sets of the digits of the current output numerical value are interpreted as the first and second integral operands. In the preferred embodiment a predetermined number of the least significant whole number digits is interpreted as the first operand and the predetermined number of the most significant fractional digits is the second operand. This data entry method reduces the amount of memory required to store the operands and to execute the function. This data entry method also enables entry and execution of these two variable functions in the same mathematical hierarchy as single operand functions. In the case of the preferred embodiment, in which this data entry method is used for calculating permutations and combinations, this is the preferred and mathematically correct method of executing these functions.