Pearson Marshall
11/20/2023 · Middle School
Qn 9. Simplify the following Boolean function a) \( F(A, B, C, D)=\sum(0,1,2.3,4,6,7,8,9,10,15) \) b) \( F(A, B, C, D)=\sum(0,4,6,8,9,11,11,14,15) \mathrm{m} \)
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Step-by-step Solution
To simplify the given Boolean functions, we can use the Karnaugh map (K-map) method. Let's go through each function step by step.
### a) \( F(A, B, C, D) = \sum(0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 15) \)
1. **Construct the K-map**: We will fill in the K-map with the minterms.
The K-map for 4 variables (A, B, C, D) is structured as follows:
```
CD
AB | 00 | 01 | 11 | 10
-----------------------
00 | 1 | 1 | 1 | 1 (0, 1, 3, 2)
01 | 1 | 1 | 0 | 1 (4, 5, 7, 6)
11 | 0 | 0 | 1 | 1 (12, 13, 15, 14)
10 | 1 | 1 | 0 | 0 (8, 9, 11, 10)
```
Filling in the K-map with the given minterms:
```
CD
AB | 00 | 01 | 11 | 10
-----------------------
00 | 1 | 1 | 1 | 1 (0, 1, 3, 2)
01 | 1 | 1 | 0 | 1 (4, 5, 7, 6)
11 | 0 | 0 | 1 | 1 (12, 13, 15, 14)
10 | 1 | 1 | 0 | 0 (8, 9, 11, 10)
```
2. **Group the 1s**: We can form groups of 1s in the K-map.
- Group 1: (0, 1, 2, 3) -> Covers \( A'B' \)
- Group 2: (4, 5, 6, 7) -> Covers \( A'B \)
- Group 3: (8, 9) -> Covers \( AB' \)
- Group 4: (10, 15) -> Covers \( ACD \)
3. **Write the simplified expression**: The simplified expression is:
\[
F(A, B, C, D) = A' + B'C + ACD
\]
### b) \( F(A, B, C, D) = \sum(0, 4, 6, 8, 9, 11, 14, 15) \)
1. **Construct the K-map**: We will fill in the K-map with the minterms.
Filling in the K-map with the given minterms:
```
CD
AB | 00 | 01 | 11 | 10
-----------------------
00 | 1 | 0 | 0 | 1 (0, 1, 3, 2)
01 | 1 | 0 | 1 | 0 (4, 5, 7, 6)
11 | 0 | 1 | 1 | 0 (12, 13, 15, 14)
10 | 1 | 1 | 0 | 0 (8, 9, 11, 10)
```
2. **Group the 1s**: We can form groups of 1s in the K-map.
- Group 1: (0, 4) -> Covers \( A'B' + A'B \)
- Group 2: (8, 9) -> Covers \( AB' \)
- Group 3: (14, 15) -> Covers \( AB \)
3. **Write the simplified expression**: The simplified expression is:
\[
F(A, B, C, D) = A'B' + A'B + AB'
\]
### Final Results
a) \( F(A, B, C, D) = A' + B'C + ACD \)
b) \( F(A, B, C, D) = A'B' + A'
Quick Answer
a) \( F(A, B, C, D) = A' + B'C + ACD \)
b) \( F(A, B, C, D) = A'B' + A'B + AB' \)
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