Teleprinters

Electronic teleprinters can readily operate in a variety of speeds, but mechanical teleprinters require the change of gears in order to operate at different speeds.

Teleprinters in computing Computers used teleprinters for input and output from the early days of computing.

At first they sent signals using teleprinters but then the Americans introduced "new fangled" teletypes that made the work easier.

A system of two teleprinters, with one operator trained to use a typewriter, replaced two trained Morse code operators.

Both wire-service and private teleprinters had bells to signal important incoming messages and could ring 24/7 while the power was turned on.

By 1979 the Kleinschmidt division was branching off into Electronic Data Interchange, a business in which they became very successful, and replaced the mechanical products, including teleprinters.

By the 1930s teleprinters were being produced by Teletype in the US, Creed in Britain and Siemens in Germany.

Connecting the various sites was an enormous network of telephones, modems and teleprinters.

During the second generation remote terminal units (often in the form of Teleprinters like a Friden Flexowriter ) saw greatly increased use.

Earlier teleprinters had three rows of keys and only supported upper case letters.

Electromechanical teleprinters were heavy, complex and noisy, and have been replaced with electronic units.

From the 1980s, teleprinters were replaced by computers running teleprinter emulation software.

It could be created by some teleprinters (such as the Teletype ), which used special characters to indicate ends of records.

Later, a Telex was a message sent by a Telex network, a switched network of teleprinters similar to a telephone network.

Message centers had rows of teleprinters and large racks for paper tapes awaiting transmission.

Most Teletype audio recordings in existence today are of teleprinters operating at 60 words per minute, and mostly of the Teletype Model 15. Another measure of the speed of a Teletype machine was in total "operations per minute (OPM)".

News was received on receive-only teleprinters, without keyboards or dials.

Radioteletype tuning indicator Tuning indicator on cathode ray tube Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.

Special versions of teleprinters had FIGS characters for specific applications, such as weather symbols for weather reports.

Teleprinters are still widely used in the aviation industry ( AFTN and airline teletype system ), and variations called Telecommunications Devices for the Deaf (TDDs) are used by the hearing impaired for typed communications over ordinary telephone lines.