It is interesting to ponder the progress telecommunication has made in the last 150 years. We have gone from the telegraph all the way to the point that virtually everyone on earth is interconnected via cell phone. I find it interesting in traveling in Africa to see that people who have neither running water nor electricity have a cell phone. One of the steps along the way between the telegraph and the smartphone was the teletype. The teletype allowed an operator at one location to type on a keyboard, and that message be printed out at a different location. The technology was still very similar to the telegraph, but the teletype was like a typewriter and did not require the operator to know morse code.