US Patent 7870181 Chinese abacus adder

Patent 7870181 was granted and assigned to National Changhua University of Education on January, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

National Changhua University of Education

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7870181

Date of Patent

January 11, 2011

Patent Application Number

11748082

Date Filed

May 14, 2007

Patent Primary Examiner

‌

David H. Malzahn

Patent abstract

A Chinese abacus adder is disclosed. The Chinese abacus adder includes a B/A (binary to abacus) circuit, a P/A (parallel addition) circuit and a T/B (thermometric to binary) circuit. The Chinese abacus adder has a multiple radix calculating structure, which could reduce power consumption of the system and lower the calculation delay time.