A few years ago, I wrote an article about messaging and encryption inspired by a visit to the National Museum of Computing in the UK. I developed a Morse Click shape to demonstrate how Visio can be used to represent and learn Morse Code. However, I never published the shapes here, and my good friend John Marshall recently wrote an article about Braille in Visio, so I thought I should explain how I made the Morse Click shapes, and I took the opportunity to enhance the shapes with some accessibility features that I have learnt since I originally designed them. I have also changed the shapes to be Visio Web friendly, which means, for example, removing shape effects.
I think I learnt Morse Code as a Cub Scout, but forgotten it in the half-century since. Its evolution, and its use today still makes very interesting reading. Each letter comprises of between one and four short or long clicks, whilst each number has five such clicks. Generally, the most used letters have lesser clicks, with ET being the lowest number, presumably to save an extra terrestrial money on a phone call home!
There are just two master shapes of interest here, Morse Click and Morse Click Rack, and a couple of page Shape Data rows. The Morse Click shape can be anyone of the 36 characters with a simple Shape Data value change, whilst the Morse Click Rack is a list shape and can spell out the words of up to 26 Morse Click shapes within it.
[Read more…] about Understanding Morse Clicks with Visio
