In a modern industrial embedded system for an automatic assembly line a control unit is designed to manage the operation of various machines such as robotic arms conveyor belts and sensors$.$the control unit uses $,$register to store configuration data, perform arithmetic operations for real time decision making, and uses latches ti store information to execute sewuential tasks. To handle complex operations, like the positioning of a robotic arm and controlling the speed of motors, the system needs to perform fast addition and subtraction operations as part of its feedback loop. The system music is at $16$ registered to store the robotic arms position. The systems control logic needs to perform both addition for increasing position values and subtraction for decreasing position values as part of its feedback mechanism. I let stories intermediate values while the system perform these operation, the correct state is retained for sequential execution.