Homework #4 Due: Friday, October 11, 2002   Multiplexer  Design, simulate and verify an 8-to-1 multiplexer using 4-to-1 multiplexer modules with chip select (CS) capability.  8-bit Full Adder Design, simulate and verify  an 8-bit full adder employing two 4-bit full adders. Test your circuit for the following inputs: A = [11010101] and B = [11101111].   Design of 4-bit Full Adder using 4-to-1 Multiplexer Modules Design, simulate and verify a 4-bit full adder using 4-to-1 multiplexer module and inverters. Test your circuit for the following inputs: A = [0101] and B = [1111].