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:
Mar. 21, 1978
Filed:
Feb. 28, 1977
Joseph P Francini, Castro Valley, CA (US);
Other;
Abstract
A multi-mode calculator apparatus is provided including microprocessor means controlled by a control program contained in read only memory means, random access memory means, a keyboard unit, mode selection means and a display unit. In one mode, the calculator apparatus provides for selectively storing data and for updating data already stored in a plurality of permanent storage registers organized in one or more file blocks. In a second mode, step by step processing of the stored data under microprocessor control is enabled including step by step line indication means for guiding the calculator user through the filling out of complex forms. A third mode enables erasure of a file as a block and for transfer of the contents of one file to another again as a block. A standard calculation mode for simple arithmetic calculations may also be provided. The apparatus includes a replaceable programming assembly, enabling different operations to be performed by the control program as a function of the given programming assembly presently installed in the apparatus.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile