Morse Code

is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. Morse code is named after Samuel Morse, one of the inventors of the telegraph. wikipedia

HEIDER, Fritz, 2005. Ding und Medium. Berlin: Kadmos. ISBN 978-3-931659-71-4.

> […] the sign systems created by humans follow the same principle. So many letter combinations can be formed from the 24 letters because the letters are independent of each other. If A always had to be followed by B, then we would no longer have the two letters A and B, but only the one character element AB. However, the script also works when it consists of only two letters, as Heider states with the example of Morse script. But then the separation of the two letters and the "freedom" of their succession is all the more important. For the reader, the letters have a similar function as the light waves have for the seer. For the scribe, on the other hand, they are the medium of a motor intervention in the world-and in a certain sense, for the scribe, they are not black figures on a white background, but expressed meaning made into an "outside world thing." In Heider, then, a similar language of reification as in Plessner, who appointed knowledge an in-between thing.

About coding semantics and systems

Phil Jackson, the renown basketball coach – Michael Jordon's coach – would tell his players on the court to always look for the space between.

“The big idea is messaging — that is what the kernal of Smalltalk/Squeak is all about (and it’s something that was never quite completed in our Xerox PARC phase). The Japanese have a small word ma — for that which is in between perhaps the nearest English equivalent is interstitial. The key in making great and growable systems is much more to design how its modules communicate rather than what their internal properties and behaviors should be.” —Alan Kay

As J. Nicholas Entrikin writes this preface, helicopters drone overhead and sirens blare as firefighters work on a nearby hillside to contain a brushfire. They labor to protect my neighborhood and community, and I continue to work at my computer. Fire is not an uncommon occurrence in this natural environment. Except for the individuals fighting the fire and those whose homes are endangered by it, life goes on as usual in the local community, interrupted occasionally by a glance toward the hills.

If Amateur Radio is a fraternity, Morse Code is it's initiation. The introduction of the code-free licence class shows that the Federal Communications Commission is unwilling to enforce that initiation on behalf of our community. To avoid a splintering of our ranks we must redouble our efforts to teach morse code. And our focus must be the code-free hams on VHF. From the Air Morse website .

My brother wrote a simple loop to blink an LED. I added some bit shifting and testing to make it send morse code.

This project contains two programs: github , site , page , download

I played with drawing ferns and trees with Aza Raskin's Algorithm Ink, a client-side recursive drawing tool. Then I got some ideas about a different kind of spiral.

I modeled a student learning morse code with a Fortran program so that I could verify algorithms and optimize parameters a microprocessor based teaching program.

I would generate random practice text with computer programs that would slowly increase the code speed from 5 to 15 words per minute over 90 minutes, the duration of a standard cassette tape.

The original version of Morse code program was written in 1976 for the Motorola 6800 microprocessor. This was in the early era of personal computers, then a hobby item.

Prof. Paul Wintz engaged Jim Wilson to design and manufacture a small circuit board using newly available 6800 processor family components from Motorola.

How would you teach Morse code to a person? Probably you'd divide the characters into groups and send the same few signals repeatedly until learned – sending "missed" characters more frequently. A microcomputer can provide the same individualized introduction to Morse code.

See Qst Article c2

This Morse Code Encoder/Decoder would buffer both send and received data and display the size of the queues as a bar-graph in the computer's lights.

I got tired waiting for DEC's PAL assembler to run on a friends home DEC PDP-8e so I wrote this CDC 6500 simulator and ran the assembler binary there.

Learning to hear letters in morse code requires practice at auditory distinction well suited to mechanical instruction. However, the obsolescence of the task has prevented ongoing investment in morse teaching technology. Could this inattention make learning morse an excellent testbed for advanced learning mechanisms?

This plugin teaches you to understand Morse code. It starts with a few letters and adds more when it sees that you are ready. It saves progress as edits to the page.

This teaching machine comes from a series of implementations using the same algorithm dating back to the '70s. History and downloads available online. site

This program teaches you to receive Morse code. It starts with a few letters and adds more when it sees that you are ready. download