4019 8-to-4 line noninverting data selector/multiplexer with OR function. +----------+ +-------------------+ 4A1 |1 +--+ 16| VCC | A0| A1| S1| S0| Y | Y=S0*A0+S1*A1 3A0 |2 15| 4A0 |---+---+---+---+---| 3A1 |3 14| S1 | X | X | 0 | 0 | 0 | 2A0 |4 13| Y4 | X | 0 | 0 | 1 | 0 | 2A1 |5 4019 12| Y3 | 0 | X | 1 | 0 | 0 | 1A0 |6 11| Y2 | X | 1 | X | 1 | 1 | 1A1 |7 10| Y1 | 1 | X | 1 | X | 1 | GND |8 9| S0 +-------------------+ +----------+ [This information is part of the GIICM]