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:
Aug. 07, 1979
Filed:
Jun. 01, 1977
Emil E Olander, Jr, Fort Collins, CO (US);
Rex L James, Loveland, CO (US);
Ivar W Larson, Loveland, CO (US);
Wayne F Covington, Loveland, CO (US);
Jack M Walden, Loveland, CO (US);
Robert E Watson, Loveland, CO (US);
Francis J Yockey, Loveland, CO (US);
Fred Wenninger, Jr, Loveland, CO (US);
Homer C Russell, Berthoud, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit. The input and output units include a solid state output display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements and an output printer unit capable of selectively printing every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. Questions may be asked of the user and user instructions and other alphameric messages may be given by the output display unit. Answers to those questions and output data may be subsequently printed on the output printer unit without printing the questions, user instructions, and messages displayed by the output display unit.