TELETYPE Entwicklungen über die Jahre....

Alles, was nicht direkt mit dem i-Telex System oder technischem Support zu tun hat, im entferntesten Sinne aber noch zum Thema Fernschreiber passt.
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TELETYPE Entwicklungen über die Jahre....

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Beitrag: # 10308Beitrag DF3OE »

von der amerikanischen Mailingliste:

EXAMPLES OF TELETYPE'S MAJOR ADVANCES FROM 1930 THROUGH THE
MIDDLE 1960's
1930—Model 15 introduced, using type bars and a stationary platen.
1931—The first Selective Calling Private Line System developed (64A and B).
1931—Manual TWX introduced, using Model 15 equipment.
1935—Model 19 Automatic Send and Receive machine introduced enabling
preparation of punched tape prior to transmission.
1938—Model 26 introduced, new low cost page printer.
1940—A major improvement in Selective Calling introduced, known as 81
type.
1941—The ability to receive punched paper tape (with or without simultaneous printing on the tape) was introduced to enable a more automated
transmission capability. (Model 14 Typing Reperforator).
1943—Model 15 redesigned for U.S. government to operate at 100 w.p.m.—
first successful page printer at this speed.
1948—First electronic multiplex four-channel system for U.S. government.
1950—A totally redesigned machine was developed known as the Model 28.
This equipment operated at 100 w.p.m. and also enabled functions to be per
formed (e.g., turning components on/off) under the control of a wired logic
"stunt box", which contained up to 42 separate actions. In addition, the printing mechanism was drastically new, using a "type box", itself interchangeable
and with interchangeable pallets, rather than the traditional type bars found
in the Model 15 and standard office typewriters. Quieter operation was an
other innovation achieved through the use of sound deadening insulation.
1951—First torn tape switching systems.
1951—81D Selective Calling introduced, incorporated many automatic fea
tures such as automatic message pick-up.
1952—First electronic Monoplex, especially designed for the DEW line to
meet special transmission difficulties created by atmospheric conditions.
1953—First of high-speed paper tape systems printing at 600 w.p.m. for
news services.
1955—First transistorized electronic multiplex developed for U.S. government.
1956—Speed of paper tape systems increased to 1000 w.p.m.
1957—82 type Automatic Switching System developed for Bell System.
1958—Delivery begun on the new 83A/B Selective Calling Systems for
medium volume customer requirements, providing positive answerback and
unattended operation.
1959-64—Several refinements to the 83B series were effected. By 1964 there
"were over 1,000 83B Systems in existence.
1961—Dataspeed I introduced, providing for high speed (1050 w.p.m.)
paper tape transmission in standalone terminals.
1961—83B Systems interface available for computer use.
1962—Dial TWX introduced in Model 33 enabling connection without oper
ator intervention.
1962—Eight-level ASCII coded equipment introduced as Models 33/35.
Greater accuracy through the use of parity and additional codes required for
computer operations, were the significant innovations. The older Baudot code
equipment only offered 32 (2s) distinct codes, while the ASCII structure
enabled 128 (27). This equipment was offered on TWX, and Dataphone.
1964—Dataspeed V introduced, using parallel transmission, enabled many
low cost transmitters to connect to central location receiver for data collec
tion. (Like the Dataspeed I. this was a standalone unit.)
1965—ASCII coded equipment available for Private Line Selective Calling
Systems, specifically offered at this time with the line discipline known as
8A1/8B1.
1966—Full computer interface available with the above systems.
1966—A new data entry device was developed and introduced, known as the
"Controlmatic". using the new Model 35 teletypewriters as the basic equipment
for forms entry and paper tape storage.
1967—Technological improvement enabled the development of a paper tape
storage replacement introduced as the "4210 Magnetic Tape Terminal". It
provided storage for subsequent transmission of up to 150.000 characters of
data, input from either a Model 33 or 35 teletypewriter. (Subsequent development permitted interconnection of this equipment with the Model 37 and 38
units as well.)


naja, immerhin haben sie 1931 schon "manuelles TWX (Telex) erfunden... ;)
und 1962 automatisches TWX (ohne Handvermittlung) ;)
...
Folgende Benutzer bedankten sich beim Autor DF3OE für den Beitrag (Insgesamt 2):
ProgBernieISBRAND
mfg
henning +++

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