C) Obtain an equivalent AND expression for the following OR expression (use double inversion)

1. + +

2. + ( + )

D) Obtain an equivalent OR expression for the following AND expression (use double inversion)

1. .

2. . .

E) Apply De-Morgan law to each of the following expressions:

1. ( + )

2. ( + + )

F) Implement the following functions with only AND gates and inverters, show schematic and logic expression for each:

1. 1 = ( + )

2. 2 = + CD