@Override
	public String toString(){
		this.updateBoard();
		StringBuilder strBld = new StringBuilder();
		for(int i = 0; i < height; i++)
		   {
		      for(int j = 0; j < width; j++)
		      {
		         strBld.append(circuitBoard[j][i]);
		      }
		      strBld.append('\n');
		   }
		
		return strBld.toString();
	}