7432
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The 7432 (variants 74LS32, 74HC32) is a 74-series logic IC with four independent 2-input OR gates.
7432 Pinout
.--\/--. 1A - |01 16| - +5V 1B - |02 15| - 4A 1Y - |03 14| - 4B 2A - |04 13| - 4Y 2B - |05 12| - 3A 2Y - |06 11| - 3B Gnd - |07 10| - 3Y `------'
Signal descriptions
For each set of pins starting with the same number, Y is high if either A or B are high.