A telegraph key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code. In Morse code, characters are encoded as sequences of dots and dashes. The length of a dot is 1 time unit, and a dash is 3 time units. The space between symbols of the same letter is 1 time unit. The space between letters is 3 time units, and the space between words is 7 time units. Using the skills learned during this lab, we will create a digital version using the Arduino. Build the below circuit again. 2.1 Dots and Dashes As in section 1.7, the LED should turn on when the pusnbutton is pressed. Now, write code that interprets sequences of pushbutton presses as dots and dashes from Morse code. using the timing rules listed above. Pnnt the dots and dashes (and spaces between words) to the serial monitor You can decide what the length of a time unit should be 2.2 Characters Extend your coce from 2.1 to pnint not just dots and dasnes, Dut the characters they represent, to the serial monitor