Multiplexer-based binary incrementer/decrementers

In this paper, novel multiplexer (MUX)-based incrementer/decrementers are proposed. The proposed designs are more efficient in terms of speed and hardware complexity compared to the adder-based ones for both signed and unsigned cases. A FPGA implementation comparison shows that the proposed design reduces both area and delay close to 40%. The power consumed by the MUX-based design is almost 35% less than that of the carry propagation adder (CPA)-based design.