$2\mathrm{.}2\mathrm{.}4$ CCU

The Central Control Unit $($CCU$)$ serves as a crucial digital logic circuit commonly integrated into microcontrollers, microprocessors, and DSPs$.$ Its role encompasses executing arithmetic, logical$,$ and comparison operations on input signals. The construction of the CCU relies on the inclusion of combinational circuits like adders, multiplexers, comparators, and decoders, tailored to facilitate its functionalities.

In this project, the Central Control Unit $($CCU$)$ will incorporate specific inputs and outputs, accompanied by flags for input comparison. For instance, if input equality is detected, the FLAG$\_$E will indicate an output of $\text{'}1\text{'}.$ Similar comparisons will be conducted for other inputs. Detailed operational instructions for the CCU under various OP$\_$CODE scenarios are provided in Table $2.$