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. 17, 1981
Filed:
Mar. 20, 1979
Georg Haubner, Berg, DE;
Jurgen Wesemeyer, Nuremberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A microprocessor has a first and second set of output terminals, the second set also being utilized as input terminals. A matrix is provided which has a first set of lines connected to the first set of output terminals and a second set of lines connected to the second set of output terminals. A switch-diode combination is connected at selected points of intersection of the two sets of lines. For data input, each input signal to be entered into the microprocessor is applied to close a respective one of the switches. Lines connected to the first set of terminals are then interrogated individually, by application of an 'O' signal on the line. This is transferred to the corresponding one of the second set of lines only when the associated switch is closed. The so-transferred 'O' signals are stored in a register in the microprocessor which is assigned to the interrogated line. For data output, all lines connected to the first set of outputs carry a '1' signal. The diodes block the '1' signals from the second set of lines and signals are transmitted from the second set of outputs to indicating instruments.