| 31. | In 1958, the agency installed the teleprinters in the offices of its clients.
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| 32. | Until the end of the 1970s, ADN compiled and distributed news via teleprinters.
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| 33. | Using random numbers for cryptography was first done around 1917 for securing teleprinter communications.
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| 34. | Canadian Frederick Creed invented the teleprinter in 1902.
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| 35. | During the 20th century, technicians tested typewriters and teleprinters by typing the sentence.
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| 36. | Messages were first transmitted by Morse code and later by teletypewriters, teleprinter and telex.
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| 37. | The Germans also developed a series of teleprinter encryption systems, quite different from Enigma.
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| 38. | Early teleprinters used the ITA-1 Baudot code, a five-bit code.
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| 39. | A teleprinter attached to a modem could also communicate through standard switched public telephone lines.
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| 40. | Shortly afterward a practical teleprinter was patented (, granted July 3, 1917 ).
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