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Teletype teleprinters in use in England during World War II Example of teleprinter art: a portrait of Dag Hammarskjöld, 1962. A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations.
Teletype Model 33 ASR teleprinter keyboard with punched tape reader and punch. The left-front unit is the tape reader with its three-position START/STOP/FREE lever in the STOP position. A less-common tape reader had a four-position START/AUTO/STOP/FREE lever. In the AUTO position it could be commanded on and off remotely.
The Siemens & Halske T52, also known as the Geheimschreiber [1] ("secret teleprinter"), or Schlüsselfernschreibmaschine (SFM), was a World War II German cipher machine and teleprinter produced by the electrical engineering firm Siemens & Halske. The instrument and its traffic were codenamed Sturgeon by British cryptanalysts.
A Baudot keyboard, 1884 A Creed Model 7 teleprinter, 1931. A teleprinter is a telegraph machine that can send messages from a typewriter-like keyboard and print incoming messages in readable text with no need for the operators to be trained in the telegraph code used on the line.
The Teletype Inktronic Terminal is an electronic, high-speed teleprinter that uses electrostatic deflection to print characters at 1200 words-per-minute. The Inktronic terminal prints an 80 column page using forty jets to print 63 alphanumeric characters in two columns on an 8.5 inch roll of paper.
Although best known for the teleprinter, Kleinschmidt also invented many other devices, including an automatic fishing reel and a vaccination shield, and is credited with making major improvements to the Wheatstone (stock market ticker tape) perforator. [4] He also invented a macaroni-twisting machine. His inventions made him a multi-millionaire.
When a key of the teleprinter keyboard is pressed, a 5-bit character is generated. The teleprinter converts it to serial format and transmits a sequence of a start bit (a logical 0 or space), then one after the other the 5 data bits, finishing with a stop bit (a logical 1 or mark, lasting 1, 1.5 or 2 bits). When a sequence of start bit, 5 data ...
The Hellschreiber, Feldhellschreiber or Typenbildfeldfernschreiber (also Hell-Schreiber named after its inventor Rudolf Hell) is a facsimile-based teleprinter invented by Rudolf Hell. Compared to contemporary teleprinters that were based on typewriter systems and were mechanically complex and expensive, the Hellschreiber was much simpler and ...