2.  Morse code is a method of communication that relies on the transmitting of an alphabet constructed from dots and dashes.

3.  electrical pulses along a telegraph wire  an audio tone  as a radio signal with short and long pulses or tones  as a mechanical or visual signal e.g. a flashing light.

4. SSamual Morse invented Morse Code: ›1›1837 - Morse invented the electrical telegraph ›1›1836 - Morse finished his first working sample of the telegraph. ›1›1838 - Morse changed the telegraphic symbols, from a telegraphic dictionary with number code to a code for each letter. ›1›1844 - Morse sent the telegraph message "What hath God wrought" Washington, D.C. to his assistant, in Baltimore, Maryland.

5.  1890’s - Early radio communications  Navigational radio beacons  Continuous wave amateur radio operators.

6.  1848 - changes to eleven of the letters, was developed in Germany and eventually adopted as the worldwide standard as "International Morse".  The original code is now used only the United States and has became known as Railroad or American Morse code.