Binary matrix, negative number display.

I want to express the subtraction of a binary matrix as a negative number.

ex) = 00000000 - 00001001 = 10001001

Below is the code that I tried.

num = (0:9)';
num_ver = repmat(num,[1,length(num)]);
num_hor = num_ver';
num_comb = [num_hor(:),num_ver(:)];

A = zeros(size(num_comb,1),8);

for ii = 1:length(num_comb)
    str2 = dec2bin(-(num_comb(ii,:)),8);
    str2_ = [str2;'        '];
    A(ii,:) = str2num(str2_(:)');

In the case of addition and multiplication, the desired value was output.(sum,prod)

The output value I want is as follows.

    A= 
    [00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        10000101;
        10000110;
        10000111;
        10001000;
        10001001;
        
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        10000101;
        10000110;
        10000111;
        10001000;
        
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        10000101;
        10000110;
        10000111;
        
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        10000101;
        10000110;
        
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        10000101;
        
        00000101;
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        10000100;
        
        00000110;
        00000101;
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        10000011;
        
        00000111;
        00000110;
        00000101;
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        10000010;
        
        00001000;
        00000111;
        00000110;
        00000101;
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        10000001;
        
        00001001;
        00001000;
        00000111;
        00000110;
        00000101;
        00000100;
        00000011;
        00000010;
        00000001;
        00000000;
        ];

Answer 1

[Image Analyst]

You'll have to have A be character array or a string array, not a numerical array.