Problem Description :

Consider the circuit of ALU $($Arithmetic logic unit$)$ in the figure $1.$ The circuit can perform both

arithmetic$/$ logical operations. Refer to the table $1$ for the possible operations. The Sel signnal will

specify the type of operation to be performed $($arithmetic or logical$)$ and the specific operation.

Op

Give the corresponding VHDL description $($both behavioral and structural$)$

$[$Optional$]$: provide a testbench for your design