Title: Binary adder circuit

Abstract: A binary adder circuit which, in response to a mode selection signal, is forced to operate as if two of its inputs were equal, irrespective of the actual value of those inputs. In this condition, the circuit acts effectively as a connector, coupling two of its inputs direct to the sum and carry outputs. The invention is useful in a circuit arrangement for performing adding and shifting operations.

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Inventors: Hunt, David J. (Hitchin, GB)

Application Number: 019765
Filing Date: 1979-03-12
Publication_date: 1981-03-03
Assignee: International Computers Limited (London, GB2)
Primary Class(es): 708/703 326/37, 708/230, 708/707
Other Classes:
US Patent Ref:

3417236	Dec, 1968	Utley	364/716.
3571615	Mar, 1971	Kelly	364/716.
3932734	Jan, 1976	Parsons	364/786.

Other Refs:
Primary Examiner: Smith, Jerry
Assistant Examiner:
Attorney: Hane, Roberts, Spiecens & Cohen