Boolean Algebra

Front

X . X

Back

X

Front

X + X

Back

X

Front

X + 0

Back

X

Front

X . X

Back

0

Front

A . B 
is the same as

Back

B . A

Front

A . B is the same as

Back

A + B

Front

X . ( Y . Z ) is the same as

Back

( X . Y ) . Z

Front

A . ( B + C ) is the same as

Back

( A . B ) + ( A . C )

Front

_____
A . B

Back

A + B

Front

( A + B ) ( C + D ) is the same as

Back

AC + AD + BC + BD