GUIDES AND REFERENCES
Morse telegraph history and input methods
Explore a documented 1844 message, compare telegraph mechanisms and distinguish modern assistive input from text translation.
A documented message in 1844
The Library of Congress preserves the outgoing paper tape for the message sent from Washington to Baltimore on May 24, 1844. Morse sent the words What hath God wrought? to Alfred Vail. The collection provides a concrete artifact to examine alongside the history rather than an unattributed origin story.
The Library’s account describes contributions from Joseph Henry, Leonard Gale and Alfred Vail to the telegraph’s development. A functioning telegraph required more than a character table: electrical apparatus, a line, a receiver and people using a shared convention.
Historical code and current reference
American railroad Morse includes internal pauses and long marks. The International recommendation supplies the modern character/timing reference used for most examples on this site. A pattern from one system should not be interpreted under the other without checking the mapping.
Try the historical message in International mode as a modern spelling exercise. Its output here is not a facsimile of the original paper tape or a claim about the precise timings of that transmission. The American guide shows how this implementation represents its separate historical mapping.
The device and the person using it
A straight key, a mechanical bug and an electronic keyer generate marks differently. The hardware guide compares those mechanisms and adjustable controls. The accessibility guide explains the difference between translating typed text and using short/long actions as an input interface.
Read the documented setup instructions for a specific device. A common alphabet does not imply that every tool accepts a switch, gaze signal or blink. Our main converter accepts typed characters and browser speech transcription; it is not a switch-access keyboard.
Source-backed checkpoints
| Date/reference | What it documents |
|---|---|
| May 24, 1844 | Library of Congress outgoing message tape and Washington–Baltimore transmission |
| ITU-R M.1677-1 (2009) | International character and timing recommendation |
| Current product instructions | Supported input methods and device setup |
Worked examples
These patterns use International Morse. Spaces separate letters; / separates words. A slash in the original text is encoded as -..-.
- WHAT HATH GOD WROUGHT?
- Try this message
.-- .... .- - / .... .- - .... / --. --- -.. / .-- .-. --- ..- --. .... - ..--..12.42 seconds at 20 WPM