Abstract: An automatic discharge system permits the counting and discharge of measured quantities of similar articles. The system includes a set of substantially identical discharge modules arranged in a series. Each discharge module is connected to a counting device which counts a measured quantity of articles and discharges the articles into a container, upon command. Each discharge module also includes a microprocessor, the microprocessors of the discharge modules being identically programmed. Each microprocessor receives inputs from the microprocessors in adjacent modules, anad transmits signals to the adjacent microprocessors, such that signals propagate up and down the series. A central control unit issues a "step" signal which propagates up the series. Each time a microprocessor receives such a "step" signal, it records a "turn". Each microprocessor is programmed to cause its associated counter to dump articles on one or more predetermined "turns".

Abstract: A counting device determines the number of similar articles, or parts, passing a detector. The device is especially useful in packaging small parts into containers, and in insuring that each package contains the correct number of parts. The counter is preferably of the type in which the parts interrupt a beam of light, changing the current through a photoelectric cell. When the current in the photoelectric cell falls below a predetermined threshold level, the device generates a pulse which indicates the presence of a part. The pulses are counted electronically. The device preferably includes a microprocessor which can efficiently control the counting, calibration, and diagnostic operations. The microprocessor stores information relating to the threshold current level, for a given type of part. The value of the threshold can be determined by a separate calibration procedure.