Simplify the Boolean function F together with the don't-care conditions in the following function
Q.) Simplify the Boolean function F together with the don't-care conditions in the following function
Subject: Digital SystemsGiven Boolean function:
$$F(A, B, C) = \sum m(0, 1, 2, 3, 7, 8, 9, 12, 13, 15)$$
$$D(A, B, C) = \sum d(4, 5, 6, 10, 11, 14)$$
Objective: Simplify the Boolean function F considering the don't-care conditions in D.
Step 1: Convert to Canonical SOP Form
Expand F and D into canonical sum-of-products (SOP) form:
$$F(A, B, C) = A'B'C' + A'BC' + ABC' + AB'C + AC'B + A'BC + AB'C' + AC'B' + A'B'C + ABC$$
$$D(A, B, C) = A'B'C + A'BC' + ABC + A'B'C' + AB'C' + ABC'$$
Step 2: Combine Terms with Identical Minterms
Combine terms in F and D that have identical minterms and eliminate duplicate minterms:
$$F(A, B, C) = A'B'C' + A'BC' + ABC' + AB'C + AC'B + A'BC + AB'C' + AC'B'$$
$$D(A, B, C) = A'B'C + A'BC' + ABC + A'B'C' + AB'C' + ABC'$$
Step 3: Identify Prime Implicants
Identify prime implicants, which are minimal terms that cannot be further simplified:
$$P_1 = A'B'C$$
$$P_2 = A'BC'$$
$$P_3 = AB'C$$
$$P_4 = AC'B$$
$$P_5 = ABC'$$
Step 4: Construct Prime Implicant Chart
Create a prime implicant chart to determine essential prime implicants:
Minterm | Prime Implicants |
---|---|
0 | P_1, P_2 |
1 | P_2, P_3 |
2 | P_2, P_4 |
3 | P_1, P_2, P_3, P_4 |
7 | P_2, P_5 |
8 | P_3, P_5 |
9 | P_2, P_3, P_5 |
12 | P_1, P_2, P_4, P_5 |
13 | P_2, P_3, P_4, P_5 |
15 | P_1, P_2, P_4, P_5 |
Step 5: Identify Essential Prime Implicants
Essential prime implicants are those that cover all minterms in at least one row of the chart:
$$P_1 = A'B'C$$
$$P_2 = A'BC'$$
Step 6: Simplify Boolean Function
Simplify F using only the essential prime implicants:
$$F(A, B, C) = A'B'C + A'BC'$$
Simplified Boolean Function with Don't-Care Conditions:
$$F(A, B, C) = A'B'C + A'BC'$$
Conclusion:
The Boolean function F has been simplified considering the don't-care conditions in D. The simplified function is expressed in canonical SOP form and contains only the essential prime implicants. This simplified function is more efficient and easier to implement in digital circuits.