Abstract
Adders are fundamental unit in many computer systems. One of the most efficient adder architectures in terms of delay and area is the carry-skip adder. In this paper an area efficient 16-bit carry-skip adder to achieve high speed and low area were designed. CSA is a rapid adder that is used in data processing systems to execute quick arithmetic operations. As a result, a Modified Carry Skip Adder (MCSA) is developed using a single Ripple Carry Adder (RCA) and a Binary to Excess-1 Converter (BEC) instead of twin RCAs to save size while sacrificing speed. The design is coded in VHDL and its area and delay are analyzed using Xilinx ISE 14.7. The hardware simulation is done in Xilinx Spartan 3E FPGA.