matrix

WIDTH = 100;

cols = uint8(rand(1, WIDTH)*2);
disp(cols);

while %t
    cols(uint8(rand()*WIDTH)+1) = uint8(rand()*2);
    for i=1:WIDTH
        if cols(i) == uint8(1) then
            printf("%c", ascii(32+(126-32)*rand()));
        else
            printf(" ");
        end
    end
    sleep(50);
    printf("\n");
end