1. FUNCIONS
OR
AND
NOT
NOR
NAND
EXOR
Equacions
lògiques
S= A+B
S= A·B
S= A’
S= (A+B)’
S= (A·B)’
S=A·B’+A’+B
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Circuit
equivalent
Taula de la
veritat
A B S
0 0 0
0 1 0
1 0 0
1 1 1
A
0
0
1
1
B
0
1
0
1
A
0
1
S
0
1
1
1
S
1
0
A
0
0
1
1
B
0
1
0
1
S
1
1
1
0
A
0
0
1
1
B
0
1
0
1
S
1
0
0
0
A
0
0
1
1
B
0
1
0
1
S
0
1
1
0

2. XNOR
S=A·B’+A’·B’
A
0
0
1
1
B
0
1
0
1
S
1
0
0
1