Around our coasts, are navigation lights which tell mariners which port they are near. These lights emit flashes in a sequence unique to the port; not very sophisticated, but sufficient.
Now, suppose it was necessary to have a light, an ordinary tungsten bulb, flashing a short sequence in morse code. What circuitry would be needed ?
I am proficient in Morse from my days as RO in Merchant Navy, but Morse is no longer used unless Radio Amateurs use it as part of their hobby.
Computers and Satellites have taken over.
Might be used by some when using Aldis Lamps
It is rather sad that it's no longer used for communication, modern day technology has put it to rest grasscarp !
Had to be able to do 25 wpm for my exams.
What speed did you have to do for your Pilot's Licence ??
I cant remember what speed it was at. The invigilator was standing next to my desk while the test was in progress - I do remember that! Morse code is still used everywhere for identification of navigation aids enroute and at airports.