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:
Nov. 12, 1991
Filed:
Nov. 15, 1989
Hideyasu Koumo, Yamatokoriyama, JP;
Fumiaki Kawawaki, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The desk-top calculator in accordance with the present invention comprises a constant access key, a ROM and a control unit. The ROM is arranged such that different types of constants are anteriorly stored therein and the constants are accessed through the operation of the constant access key. The control unit is arranged such that, as well as accessing successively the different types of constants stored in the ROM each time the constant access key is operated consecutively, after one of the contants is accessed through the operation of the constant access key, when another key is operated and the constant access key operated again thereafter, the control unit accesses the constant previously accessed in the first place. According to the arrangement described above, the operation of such a desk-top calculator is simplified and its operation efficiency is sharply improved.