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:
Mar. 20, 1979
Filed:
Apr. 11, 1978
William P Ward, Poway, CA (US);
Donald K Lauffer, Poway, CA (US);
NCR Corporation, Dayton, OH (US);
Abstract
A memory device includes a circuit for reducing the number of pins or external terminals on the memory device. A threshold detector within the circuit detects the difference in voltage between signals applied at two external pins. A clocking signal at one pin provides, in addition to a synchronizing function, a memory device select function, and a signal at the other pin provides memory mode select as well as memory address, data input and data output functions. Switching transistors controlled by the output of the threshold detector connect the external pins to the power and ground terminals of an internal power supply so that the signals at the two external pins also provide the power and ground signals to the memory device.