People didnвЂ™t want to wait 24 hours or longer for their results. The old batch method of working became insufficient. They were becoming capable of interacting with users in real time, and of supporting multiple users. They were the principal means of transmitting written messages in the period following World War II up to the fax machine boom of the 1980s.Д¬omputers were evolving too. TelexВ was a worldwide network of teletypes that allowed written messages to be sent around the globe. Despite the invention and widespread use of the telephone, teletypes were still going strong. When ASCII arrived in 1963, it was adopted by the teletype manufacturers. So thatвЂ™s where we get the acronymВ TTY from, but what has telegraphy got to do with computing? ASCII and Telex This was shortened to teletypes and eventually to TTYs. To mark that advancement, the machines were named teletypewriters. Eventually, the Baudot encoding system was coupled to a traditional keyboard layout. The operator was required to learn a particular key combination for each letter. BaudotвЂ™s original hardware design had only five keys, similar to piano keys. His character encoding scheme pre-dated ASCII by 89 years.Д«audotвЂ™s encoding eventually became the closest thing to a standard in teleprinter encoding, and it was adopted by most manufacturers. The most famous, and one of the most prolific, was patented in 1874 by Г‰mile Baudot, for whom the baud rate is named. There were several techniques used to encode and decode the messages. Messages were encoded and transmitted, then received, decoded, and printed. They were an evolutionary step in telegraphy, which had previously relied on MorseВ and similar codes. They were printed on paper at the receiving end. The messages were typed by the sender on a keyboard of sorts.

These machines could send typed messages вЂњdown the wireвЂќ to distant locations. In the 1830s and 1840s, machines known as teleprinters were developed.

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