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.

Date of Patent:
Aug. 05, 1986

Filed:

Sep. 30, 1983
Applicant:
Inventors:

Melinda A Widen, Arlington, MA (US);

John J Bradley, Framingham, MA (US);

George M O'Har, Chelmsford, MA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 364736 ;
Abstract

Apparatus is provided for addressing a memory by word and by one of a number of nibbles within a word, with the ability to increment or decrement nibble and word addresses and thereby access adjacent nibbles and words without having to generate new nibble and word addresses. An initial word address is placed in an address counter and an initial nibble address is placed in a nibble control. The two addresses indicate a particular nibble within a particular word. Thereafter, only increment or decrement signals are provided to increment and decrement the nibble address and/or the word address. A nibble counter counts the increment and decrement nibble signals and when the last or first nibble in a word is addressed, an increment or decrement word address signal is respectively generated that changes the word address stored in the address counter.


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