There is nothing like " Output is 1 in the truth table values of the minterms."
Value of a minterm is 0 or 1 depends on the function.
$For \ ex$- Consider 2 variables $x$ and $y$.
In minterms,
$ 1 \rightarrow x $
$ 0 \rightarrow x' $
| $x$ |
$y$ |
$Minterm$ |
| 0 |
0 |
$x'y' =m_0$ |
| 0 |
1 |
$x'y = m_1$ |
| 1 |
0 |
$xy' = m_2$ |
| 1 |
1 |
$xy = m_3$ |
Now consider 2 functions -
| $x$ |
$y$ |
$Minterm$ |
$F_1(x,y) = x.y$ |
$F_2(x,y) =x+y$ |
| 0 |
0 |
$x'y=m_0$ |
0 |
0 |
| 0 |
1 |
$x'y=m_1$ |
0 |
1 |
| 1 |
0 |
$xy'=m_2$ |
0 |
1 |
| 1 |
1 |
$xy=m_3$ |
1 |
1 |
For function $F_1(x,y)$ only $m_3$ is $1$.
For function $F_2(x,y),m_1,m_2,m_3 \ is \ 1$.
