"CONSISTS OF FRAME WITH 40-PIN CONNECTOR AND HOLDING PRINTED WIRING BOARD WITH CONNECTOR,ELECTRICAL,RECEPTACLE; 2 CAPACITORS,FIXED,ELECTROLYTIC; 1 CAPACITOR,FIXED,CERAMIC DIELECTRIC; 2 MICROCIRCUITS,DIGITAL; 2 KEYING PINS,THE ONE ON THE LEFT WITH 90 DEG CUTOUT OF LOWER LEFT QUADRANT AND THE OTHER WITH 90 DEG CUTOUT FACING RIGHT; PROGRAMMED TO TRUTH TABLE 77A102067"