Question

Boolean function using pal with four input and 3 wide and or structure

Answer 1

3. PAL Implementation

The following four Boolean functions are to be implemented using a PAL that has 4

inputs, four outputs, and a three-wide AND-OR structure (each output OR gate has three

inputs). Complete the chart and PAL connection map below. For the chart, use a “1” to

indicate an uncomplemented variable a “0” to indicate a complemented variable, and a

“--“ to indicate no connection . For the connection map, label each output of the OR

gates, and mark each required connection with “x”.

_ _ _ _

X = A C + B C + B C + B D

_ _ _ _

Y = A C + A D + A D + B C

_ _

Z = A B + A B