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:
Sep. 12, 1989
Filed:
Oct. 21, 1987
Toshiro Oba, Nara, JP;
Michiaki Kuno, Yamatokoriyama, JP;
Noboru Akizuki, Nara, JP;
Yoshimitsu Inamori, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An electronic calculator carries out input of data, such as numeric values, stores data therein, and performs operations and processing of the input data according to the operation of necessary function keys. Further, inputted matrix data is stored in relation to one code so that when operating the matrix data, the code is utilized for inputting an operational expression, whereby the procedure for inputting such data for operation can be considerably simplified. If it is desired to preserve input data, the data can be protected by preventing rewriting or redefinition thereof. Also, data processing is enabled which excludes any data abnormally different from other data, thereby enhancing the reliability of the results of the data processing.