

sevendigit = [0 1 1 1 1 1 0;
              0 1 1 1 1 1 0; 
              0 0 0 0 1 1 0;
              0 0 0 1 1 0 0; 
              0 0 0 1 1 0 0;
              0 0 1 1 0 0 0; 
              0 0 1 1 0 0 0; 
              0 1 1 0 0 0 0; 
              0 1 1 0 0 0 0]
