Morse Code Components are made up of two parts: DOTS and Dashes. DOTS, which are represented by the letter 'D' in Morse Code, are short bursts of sound or light that represent a single letter or number. Dashes, which are represented by the letter 'D' in Morse Code, are longer bursts of sound or light that represent a single letter or number. Together, these two components form the basis of Morse Code, a system of communication used to send messages over long distances.