Jean-Maurice-Émile Baudot was an engineer with a singular vision. He died in 1903 in Sceaux, France, but his legacy outlived him by decades. In 1874, he secured a patent for a telegraph code that would eventually eclipse Morse code. By the mid-20th century, the Baudot system was the standard for telegraphic communication. It wasn’t just an alternative. It was an upgrade.
The core of his invention lay in simplicity. Morse relied on a mix of short dots and long dashes. Baudot stripped that complexity away. In his system, every letter was represented by a five-unit combination. Each unit was a signal of equal duration. It was either current-on or current-off.
This uniformity created a substantial economy over the older method. You didn’t need to measure the length of a pulse. You just counted the presence or absence of a signal. With five bits, you could create 32 distinct permutations. That number was perfect. It covered the Roman alphabet. It handled punctuation. It also included commands to control the mechanical functions of the telegraph machines.
Baudot didn’t stop at encoding letters. He solved the problem of congestion. In 1894, he invented a distributor system. This allowed for simultaneous multiplex transmission. Several messages could travel on the same telegraphic circuit or channel. This was a massive leap in efficiency. It meant more information moved faster without laying new wires.
Modern digital communication owes a debt to this five-bit logic. If you look at modern versions of the Baudot code, you will see groups of seven or eight “on” and “off” signals. The shift to seven bits allows for the transmission of 128 characters. That expansion opened up the world of computing. A group of eight bits adds another layer. One of those bits can be used for error correction. Or it can serve another function entirely.
The connection to the teleprinter is direct. Baudot’s code and the machines that read it formed the backbone of early automated messaging. The logic remains the same today. We just use more bits. We use more complex error checking. The fundamental idea of representing information as a sequence of binary states started with a French engineer who wanted to make telegraphy faster.
Why does this matter now? Every time you send a text message or upload a file, you are relying on the principle of discrete states. The Baudot code proved that standardized, equal-length signals could carry complex information reliably. It removed the human element of rhythm and timing required by Morse. It made communication machine-readable.
The transition from Morse to Baudot wasn’t just about speed. It was about standardization. It paved the way for the digital age. We still use variations of his code. The structure has changed. The number of bits has grown. But the core concept is unchanged. Information is data. Data is on or off.
