Arithmetic Logic Unit (ALU)

An arithmetic logic unit is a combinational logic circuit used to perform arithmetic and logic operations. The ALU has a number of selection lines to determine the operations to be performed. These selection lines are decoded within the ALU circuitry so that ‘N’ selection lines can select up to 2(power N) operations. Most common operations of ALU are addition, subtraction and comparison of bits.

Finally, I have completed its design architecture.

 

Detailed Block Diagram of the ALU.