Using MATLAB or similar programming language, apply the LFSR output values of the previous problem to a 4-bit adder (circuit under test) with carry output. Apply bits D7 through D4 of the LFSR to the A input of the adder and bits D3-D0 to the B input. Apply the output of the adder, including the carry bit, to an 8-bit checksum adder (an 8-bit running sum adder without carry). Reset the 8-bit checksum adder to 0 and apply the pseudorandom sequence to the 4-bit adder and checksum adder through one cycle of the random number sequence. What value does the checksum adder produce? Simulate a defect by forcing the 4-bit adder D1 output to logic LO. What value (signature) is produced by the checksum adder? What type of circuit would we add to a BILBO controller to evaluate the functionality of the adder based on the checksum signature value?