A method of identifying electrical components picked from trays stacked in a tray tower of an electrical component placement machine includes placing identification tags on each tray. The tags contain data correlated to component part and lot number. As the stack of trays is moved into position for component picking, the tag of the upper tray is read by a tag reader. Gathered data is employed for component tracking, inventory control and setup verification.

 
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> Method and apparatus for recording and utilizing unknown signals of remote control devices

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