"CONSISTS OF FRAME HOLDING PRINTED WIRING BOARD WITH CONNECTOR,ELECTRICAL,RECEPTACLE; 2 CAPACITORS,FIXED,ELECTROLYTIC; 1 CAPACITOR,FIXED,CERAMIC DIELECTRIC; 2 MICROCIRCUITS,DIGITAL; 2 KEYING PINS,ONE WITH 90 DEG CUTOUT CENTERED FACING LEFT,ONE D-SHAPED WITH FLAT SIDE TILTED 45 DEGS FROM VERTICAL FACING UP TO THE RIGHT; PROGRAMMED TO TRUTH TABLE 77A102173"