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. 12, 1980
Filed:
Jul. 26, 1978
Applicant:
Inventors:
Assignee:
Citizen Watch Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G04B / ;
U.S. Cl.
CPC ...
364705 ;
Abstract
A portable electronic device equipped with timekeeping and calculation functions, time and calculation data being stored in semistatic shift registers. Time data is circulated once per second through a loop containing two full adders with units of seconds being incremented by one in each circulation by the first adder and digit carry operations performed by the second adder and by a bit set/reset circuit during the same circulation. Units of seconds digit of displayed time data corresponds directly to least significant digit of stored time information.