Write a MATLAB function the performs the operation of a half-adder, call it half

Question

Write a MATLAB function the performs the operation of a half-adder, call it half_add. The function should have two inputs, a and b, and return two outputs, X and c. Then, write another function, call it full_add, that invokes half_add to perform the operation of a full adder. The function full_add should have three inputs, a, b and c_in, and return two outputs, s and c_out. Finally, write a program that uses the function full_add to find and display s and c_out for each possible combination of a, b, and c_in.

Explanation / Answer

clear all; clc

% Code segment for defining HALF ADDER

function [(X,c)] = half_add(a,b)

X= xor(a,b);
c = and(a,b);
end

% Code for performing FULL ADDER function invoking Half-adders

function [(s, c_out)]= full_add(a,b,c_in)

% define intermediate variables after performing one half -adder function

[X,c] = half_add(a,b)

% Output of Second half-adder function

[S,c_2] = half_add(X,c_in)

%Output Carry

c_out= or(c,c_2)

end

%program that uses the function full_add to find and display s and c_out for each possible combination of a, b, and c_in

a=[0 0 0 0 1 1 1 1];

b=[0 0 1 1 0 0 1 1];

c_in= [0 1 0 1 0 1 0 1];

for k = 1:8

[s(k),c_out(k)] = full_add(a,b,c_in)

end

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