Re: Aufgaben und Übungen,

 0 0 0 0 0    0
 1 0 0 0 1    0
 2 0 0 1 0    1
 3 0 0 1 1    1
 4 0 1 0 0    1
 5 0 1 0 1    0
 6 0 1 1 0    0
 7 0 1 1 1    0
 8 1 0 0 0    0
 9 1 0 0 1    0
10 1 0 1 0    0
11 1 0 1 1    0
12 1 1 0 0    0
13 1 1 0 1    1
14 1 1 1 0    1
15 1 1 1 1    1


 2 0 0 1 0    1
 3 0 0 1 1    1
 4 0 1 0 0    1
13 1 1 0 1    1
14 1 1 1 0    1
15 1 1 1 1    1


Gruppe 1:
 2 0 0 1 0    1
 4 0 1 0 0    1
Gruppe 2:
 3 0 0 1 1    1
Gruppe 3:
13 1 1 0 1    1
14 1 1 1 0    1
Gruppe 4:
15 1 1 1 1    1

2:3     0 0 1 -
4       0 1 0 0
13:15   1 1 - 1
14:15   1 1 1 -


2:3     0 0 1 -
14:15   1 1 1 -
4       0 1 0 0
13:15   1 1 - 1

            2   3   4   13  14  15
2:3         *   *
14:15                       *   *
4                   *
13:15                   *       *

y <= (not x3 and not x2 and x1) or
        (x3 and x2 and x1) or
        (not x3 and x2 and not x1 and not x0) or
        (x3 and x2 and x0)

y <= (x3 or x2 or not x1) and
        (not x3 or not x2 or not x1) and
        (x3 or not x2 or x1 or x0) and
        (not x3 or not x2 or not x2)

entity meinschaltnetz0027 is
port
(
    y: out bit;
    x3, x2, x1, x0: in bit
);
end;

architecture verhaltenknf of meinschaltnetz0027 is
begin
    y <= (not x3 and not x2 and x1) or
        (x3 and x2 and x1) or
        (not x3 and x2 and not x1 and not x0) or
        (x3 and x2 and x0);
end;

architecture verhaltendsnf of meinschaltnetz0027 is
begin
    y <= (x3 or x2 or not x1) and
        (not x3 or not x2 or not x1) and
        (x3 or not x2 or x1 or x0) and
        (not x3 or not x2 or not x2);
end;