a circuit board having face and edge contact areas and selected connections between the face and edge contact areas, with at least some of {HEAD ~ the face contact areas} at positions corresponding to the openings in {TAIL ~ the insulating board} 
a circuit board having face and edge contact areas and selected connections between the face and edge contact areas , with at least some of { HEAD ~ the face contact areas } at positions corresponding to the openings in { TAIL ~ the insulating board }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL