ANDNOT

Generate  ANDNOT function using McCulloch-Pitts neural net by a MATLAB program. The truth table for the ANDNOT function is as follows:

X1    X2    Y

0     0     0

0     1     0

1     0     1

1     1     0 

example37.m
%ANDNOT function using Mcculloch-Pitts neuron
clear;
clc;

%Getting weights and threshold value
disp('Enter weights');
w1 = input('Weight w1 = ');
w2 = input('Weight w2 = ');

disp('Enter Threshold Value');
theta = input('thete = ');

y = [0 0 0 0];
x1 = [0 0 1 1];
x2 = [0 1 0 1];
z = [0 0 1 0];

con = 1;
while con
    zin = x1 * w1 + x2 * w2;
  
    for i = 1:4
        if zin(i) >= theta
            y(i) = 1;
        else
            y(i) = 0;
        end
    end
  
    disp('Output of Net');
    disp(y);
    if y == z
        con = 0;
    else
        disp('Net is not learning enter another set of weights and threshold value');
        w1 = input('Weight w1 = ');
        w2 = input('Weight w2 = ');
        theta = input('thete = ');
    end
end

disp('Mcculloch-Pitts Net for ANDNOT function');

disp('Weights of Neuron');
disp(w1);
disp(w2);

disp('Threshold value');
disp(theta);