Traditional Culture Encyclopedia - Traditional customs - Basic laws and formulas in logical algebra
Basic laws and formulas in logical algebra
1. axiom of logic algebra: (1) If a is not equal to zero, then a =1; If a is not equal to 1
A=0。 (2)0+0=0; 1+ 1= 1; 0+ 1= 1; 1+0= 1;
(3)0*0=0; 1* 1= 1; 1*0=0; 0* 1=0;
(4)0 = 1 NOT gate; 1 = 0 NOT gate;
2. Logical algebra theorem;
( 1)A+0 = A; a+ 1 = 1; A+A = A; (2)A and 0 = 0; A and1= a; A and a = a
(3)A+A NOT gate =1; One and one NOT gate = 0; (A = A NOT gate.
3. Laws of logical algebra:
(1) switching rule: A AND gate B=B AND gate A; A+B = b+ A;
(2) Distribution law: A and gate (B+C)=A and gate B+A and gate C;
A+B AND gate C=(A+B) AND gate (A+C)
(3) the law of association: a and gate (b and gate C)=(A and gate b) and gate c; A+(B+C)=(A+B)+C
(4) absorption law: A+A and AND gate c = a.
(5) De Morgan's Law: (A+B) not =(A NOT gate) and (B NOT gate)
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