you probably remember ads for “The Instructograph,” a mechanical device for learning Morse code. [Our Own Devices] has an ancient specimen of the machine and shows us how it works in the video ...

The military had a great interest in training Morse code operators at one time. They had machines that used inked paper tape like the TG-34-A in the video below. There was also the Instructograph ...

Morse code is a communication system developed by Samuel Morse, an American inventor, in the late 1830s. The code uses a combination of short and long pulses – dots and dashes, respectively ...