How much is one plus one in Boolean?

Boolean logic only works with two values, often called true and false; or 1 and 0. The operations used are called "and" and "or", as well as "not".

1 and 1 = 1

1 or 1 = 1

"and" is sometimes called "times", whereas "or" is also called "plus"; but it should be understood that they are really different operations.