28.

Plot the following expressions:

a.

A+L

b.

I+S

c.

P+U

a.

29.

On a four-square Veitch diagram a one-

variable term such as A, B, A, F, etc.,

occupies two squares.

Since a four-square

Veitch diagram is used to plot only two-

variable expressions (such as A+B), half of

b.

the squares are assigned to each variable;

and half, to the complement of the variable.

In the expression X+Y, variable X is assigned

__________squares on a four-square Veitch

diagram; variable Y is assigned_____________

c.

squares.