1.

A logic diagram which contains only an AND operation or only an

OR operation is called a first-order-logic diagram.

The diagram above is an example of first-order logic for an AND

circuit with three inputs. To convert this diagram correctly to a

Boolean expression, first, identify the symbol as an AND-logic

symbol. Notice that there are three separate inputs. Be sure to

include all the inputs in the output Boolean expression. The correct

output Boolean expression for the logic diagram above is written

ABC.

Write the output Boolean expression for the first-order-logic AND

diagram below.