GRENZE International Journal of Engineering and Technology
Arithmetic logic unit is used in performing the arithmetic and logical operations
of any system. Increasing the speed and low power consumption are the important
attributes for any digital circuit.. The speed of different modules used in the design will
determine the overall performance of the system. For the ALU design, the most important
part is the adder. Carry look-ahead adder is fast, but the area of the layout and fan-out on
some of the signals increases as the number of bits grows, slowing down the adder. Ripple
carry adder has a longer delay with minimal layout area.