anchor.diff:  -spec delete(block_state()) -> ok.
   
   delete({_Config, _Inputs, _Outputs, Private}) ->
  + 
  +  I2cRef = block_utils:get_value(Private, i2c_ref),
  +  % Turn off the display 
  +  shutdown_led_driver(I2cRef),  
  +  
     % Close the I2C Channel
  -  I2cRef = block_utils:get_value(Private, i2c_ref), 
     i2c:stop(I2cRef),
     ok.
   
  
positive.code:   block_utils:merge_attribute_lists(
      block_common:inputs(),
      [
        {blink_rate, 0, ?EMPTY_LINK},
        {brightness, 15, ?EMPTY_LINK},
        {digit_1, 1, ?EMPTY_LINK},
        {decimal_1, true, ?EMPTY_LINK},
        {digit_2, 2, ?EMPTY_LINK},
        {decimal_2, true, ?EMPTY_LINK},
        {colon, true, ?EMPTY_LINK},
        {digit_3, 3, ?EMPTY_LINK},
        {decimal_3, true, ?EMPTY_LINK},
        {digit_4, 4, ?EMPTY_LINK},
        {decimal_4, true, ?EMPTY_LINK}
      ]). 
  
  
  
negative.code: execute({Config, Inputs, Outputs, Private}) ->
  
    I2cRef = block_utils:get_value(Private, i2c_ref),
    
    DisplayState = block_utils:get_value(Inputs, display_on),
        
    BlinkRate = block_utils:get_value(Inputs, blink_rate),
    set_blink_rate(I2cRef, DisplayState, BlinkRate),
    
    Brightness = block_utils:get_value(Inputs, brightness),
    set_brightness(I2cRef, Brightness),
  
    Segments1 = block_utils:get_value(Inputs, seven_segs_1),
    write_segments(I2cRef, 1, Segments1),
    
    Segments2 = block_utils:get_value(Inputs, seven_segs_2),
    write_segments(I2cRef, 2, Segments2),
    
    ColonState = block_utils:get_value(Inputs, colon),
    set_colon(I2cRef, ColonState),
    
    Segments3 = block_utils:get_value(Inputs, seven_segs_3),
    write_segments(I2cRef, 3, Segments3),
    
    Segments4 = block_utils:get_value(Inputs, seven_segs_4),
    write_segments(I2cRef, 4, Segments4),
    
    % Block value output really doesn't have any useful info right now
    Outputs1 = block_utils:set_value_status(Outputs, 0, normal),
    
    % Return updated block state
    {Config, Inputs, Outputs1, Private}.
  
  
  %% 
  