"Tugas 4 Rangkuman Materi Aljabar Boolean"
Aturan – aturan Aljabar Boolean
Commutative law of addition
Commutative law of addition,
A+B = B+A
the order of ORing does not matter
Commutative law of Multiplication
Commutative law of Multiplication
AB = BA
the order of ANDing does not matter.
Associative law of addition
Associative law of addition
A + (B + C) = (A + B) + C
The grouping of ORed variables does not
matter
Associative law of multiplication
Associative law of multiplication
A(BC) = (AB)C
The grouping of ANDed variables does not
matter
Distributive Law
A(B + C) = AB + AC
Boolean Rules
1) A + 0 = A
2) A + 1 = 1
3) A • 0 = 0
- In math if 0 is multiplied with anything you get 0. If you AND anything with 0 you get 0
5) A + A = A
6) A + A' = 1
- Either A or A' must be 1 so A + A' =1
7) A • A = A
- ANDing with itself will give the same result
8) A • A = 0
9) A = A'
- If you not something twice you are back to the beginning
10) A + AB = A
Proof:
A + AB = A(1 +B) DISTRIBUTIVE LAW= A·1 RULE 2: (1+B) = 1= A RULE 4: A·1 = A
11) A + AB = A + B
- If A is 1 the output is 1 , If A is 0 the output is B
Proof:
A + AB = (A + AB) + AB RULE 10
= (AA +AB) + AB RULE 7
= AA + AB + AA +AB RULE 8
= (A + A)(A + B) FACTORING
= 1·(A + B) RULE 6 = A + B RULE 4
12) (A + B)(A + C) = A + BC
PROOF :
(A + B)(A +C) = AA + AC +AB +BC DISTRIBUTIVE LAW
= A + AC + AB + BC RULE 7
= A(1 + C) +AB + BC FACTORING
= A.1 + AB + BC RULE 2
= A(1 + B) + BC FACTORING
= A.1 + BC RULE 2
= A + BC RULE 4














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