Case

K1

K2

K3

K4

K5

K6

K7

K8

K9

K10

K11

K12

K13

K14

Output voltage

1

1

0

0

0

0

0

0

0

1

0

1

1

0

0

0

2

1

0

0

0

0

0

0

0

1

1

0

0

0

0

+V/2

3

1

0

0

0

0

0

1

1

0

0

0

0

0

0

+V

4

0

0

1

0

0

0

0

0

1

1

0

0

1

1

+V/2

5

0

1

0

0

0

0

0

0

1

0

1

1

0

0

0

6

0

1

0

0

0

0

1

1

1

1

0

0

0

0

−V/2

7

0

1

0

0

0

0

0

0

0

0

0

0

1

1

−V

8

0

0

0

1

0

0

1

1

1

1

0

0

0

0

−V/2

9

0

0

1

0

0

0

0

0

1

0

1

1

0

0

0