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Định luật toán điện số
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De Morgan
P
⋅
Q
¯
=
P
¯
+
Q
¯
{\displaystyle {\overline {P\cdot Q}}={\overline {P}}+{\overline {Q}}}
P
+
Q
¯
=
P
¯
⋅
Q
¯
{\displaystyle {\overline {P+Q}}={\overline {P}}\cdot {\overline {Q}}}
Nghịch chuểng
A
⋅
A
¯
=
A
¯
{\displaystyle {\overline {A\cdot A}}={\overline {A}}}
A
¯
¯
=
A
{\displaystyle {\overline {\overline {A}}}=A}
Trao Đổi
A
+
(
B
+
C
)
=
(
A
+
B
)
+
C
{\displaystyle A+(B+C)=(A+B)+C}
A
⋅
(
B
+
C
)
=
(
A
+
B
)
⋅
C
{\displaystyle A\cdot (B+C)=(A+B)\cdot C}
Phân Phối
A
+
(
B
⋅
C
)
=
(
A
+
B
)
⋅
(
A
+
C
)
{\displaystyle A+(B\cdot C)=(A+B)\cdot (A+C)}
A
⋅
(
B
+
C
)
=
(
A
⋅
B
)
+
(
A
⋅
C
)
{\displaystyle A\cdot (B+C)=(A\cdot B)+(A\cdot C)}
Hoán Chuyển
A
⋅
B
{\displaystyle A\cdot B}
=
B
⋅
A
{\displaystyle B\cdot A}
A
+
B
{\displaystyle A+B}
=
B
+
A
{\displaystyle B+A}