54ALS20AW/883 from National Semiconductor is a NAND GATE, TTL
54ALS20AJ/883C from National Semiconductor is a DUAL 4 INPUT POSITIVE NAND GATE
SNJ54ALS20AJ from Texas Instruments is a 54ALS20A DUAL 4-INPUT POSITIVE-N
{"one"=>"Select 2 to 5 items to compare", "other"=>"{{ count }} of 5 items selected"}
Select first item to compare
Select second item to compare
Select third item to compare