Filing Information

Inventor(s)	Tadashi Nakamura · Kentaro Kiyozumi ·
Assignee(s)	Ise Electronics Corporation ·  View assignee updates
Attorney/Agent(s)	Charles E. Pfund ·
Primary Examiner	David L. Trafton ·
Application Number	US5661641
Filing date	02/26/1976
Issue date	01/19/1982
Predicted expiration date	01/19/1999
U.S. Classifications	340/711  · 174/50  ·
International Classifications	G08B 536  ·
Kind Code	A
International Classifications	340337;365 R;711;718;719 ·
Related U.S. Application Data	RELATED APPLICATION This application is a continuation-in-part of Ser. No. 386,772 filed Aug. 8, 1973, now abandoned.
Foreign Priority	JP4793856 - 08/10/1972 ·

Patent Family

Abstract

In a hand held type electronic calculator wherein a display section and a key board are mounted on the surface of an insulative substrate, a driving circuit for driving the display section and an operation circuit operated by the key board are also mounted on the same surface of the insulative substrate.

Independent Claims | See all claims (5)

1. 1. A unitary type electronic calculator comprising a multi-digit display section and a key board mounted on one surface of an insulative substrate, a driving circuit for said display section and an operation circuit operated by said key board mounted on said surface of said insulative substrate and printed wire means on only said one surface of said substrate for operatively interconnecting the elements mounted on said surface to operate as a calculator having a physical thickness no greater than the combined thickness of said substrate and the thickest one of said elements.