Thought you would like this to add. 74xx922 +-----\/----+ 1 -|R1 Vcc|- 18 2 -|R2 D0|- 17 3 -|R3 D1|- 16 4 -|R4 D2|- 15 5 -|SCAN D3|- 14 6 -|DB /OE|- 13 7 -|C4 DA|- 12 8 -|C3 C1|- 11 9 -|GND C2|- 10 +-----------+ Carl Bennett.