"                        PORTES LOGIQUES"
""
"   ET (AND)     OU (OR)   OU EXCLUSIF (EXOR)   BUFFER 3 ETATS"
""
"   A  B  S      A  B  S       A  B  S           (C)  A  S"
"   0  0  0      0  0  0       0  0  0           (0)  0  0"      
"   0  1  0      0  1  1       0  1  1           (0)  1  1"
"   1  0  0      1  0  1       1  0  1           (1)  X  Hi-Z"
"   1  1  1      1  1  1       1  1  0 "
""
"NON-ET (NAND) NON-OU (NOR)  NON-OU EX (EXNOR)  INVERSEUR 3 ETATS"
""
"   A  B  S      A  B  S       A  B  S            (C)  A  S"
"   0  0  1      0  0  1       0  0  1            (0)  0  1"
"   0  1  1      0  1  0       0  1  0            (0)  1  0"
"   1  0  1      1  0  0       1  0  0            (1)  X  Hi-Z"
"   1  1  0      1  1  0       1  1  1"
"   A, B: entr‚es   (C): controle   S: sortie   X: indiff‚rent"