Sumador de dos bits (amb cronograma)

PULS A B C1 S COA 1 1 0 0 1B 1 0 1 0 1C 1 1 1 1 1D 0 1 1 0 1E 0 1 0 1 0F 1 0 0 1 0G 1 1 1 1 1H 0 1 1 0 1

Biestables SR

S R Qt Qt+1

0 0 0 0

0 0 1 1

0 1 0 0

0 1 1 0

1 0 0 1

1 0 1 1

1 1 0 x

1 1 1 x

Biestable J-K

J K Qt Qt + 1

0 0 0 0

0 0 1 1

0 1 0 0

0 1 1 0

1 0 0 1

1 0 1 1

1 1 0 1

1 1 1 0