741805 Hex 2-input NOR gates/line drivers. +----------+ +-----------+ ___ 5B |1 +--+ 20| 5A | A | B |/Y | /Y = A+B /6Y |2 19| /5Y |---+---+---| 6A |3 18| 4B | 0 | 0 | 1 | 6B |4 17| 4A | 0 | 1 | 0 | VCC |5 741 16| /4Y | 1 | 0 | 0 | 1A |6 805 15| GND | 1 | 1 | 0 | 1B |7 14| /3Y +-----------+ /1Y |8 13| 3B 2A |9 12| 3A 2B |10 11| /2Y +----------+ [This information is part of the GIICM]