Figure $1$: Design.

Create a computational unit that can compute the following operations on

$4$

bit operands:

Page

$2$

$$of

$7$

$2$

$$TEST CASES

$1$

$.$

$$AND

$2$

$.$

$$OR

$3$

$.$

$$NAND

$4$

$.$

$$NOR

$5$

$.$

$$Addition

$6$

$.$

$$Subtraction

$7$

$.$

$$Greater than

$8$

$.$

$$Less than

First test the computation unit for all operations. After verifying the unit

works properly for all operations, then instantiate the component

$3$

$$times in

the arrangement shown in Fig.

$1$

$.$

$$Make sure to use the same input and output

names shown in Fig.

$1$

$,$

$$but note that the figure is representational and does

not show all inputs and signals you might need to implement the design.