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:
Nov. 23, 1982
Filed:
Mar. 17, 1980
Odo J Struger, Chagrin Falls, OH (US);
Ronald A Brown, Willowick, OH (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A preferred embodiment of an input module is connected through six address terminals and four data terminals to six banks of contacts. A single bank address is coupled to two latches in the module and then to two banks of contacts. A nibble of data is coupled from each of two banks of contacts to each of two corresponding data latches on the module. The sequential addressing of a low nibble bank and a high nibble bank and the latching of data therefrom is controlled by sequencing circuitry which is enabled each time a bank address is written to the module. In a second embodiment coded information is output through the six address terminals and decoded by two external decoders to multiplex 256 inputs to the processor. Such modules are particularly useful in multiplexing a large number of inputs to the processor of a programmable controller.