This German Wikipedia article about Lochstreifen (paper tape) has some
nice pictures:
https://de.wikipedia.org/wiki/Lochstreifen#Lochstreifenstanzer
and this is a PDF about the display peripherals of our Telefunken machine:
ftp://computermuseum.informatik.uni-stuttgart.de/telefunken/tr440/doku/SIG100_SIG50_Mar1972.pdf
you can see pictures of the text display SIG 50 and the graphics display
SIG 100,
which also had the world's first "computer mouse", the so-called
Rollkugel, attached to it:
http://www.oldmouse.com/mouse/misc/telefunken.shtml
The article mentions the teletype Telefunken FSR 105 with a 5-hole paper
tape,
but I recall that at the Stuttgart installation there were General
Electric teletypes
with an 8-hole paper tape attached. I could not find pictures or
descriptions of this type.
I used this type regularly, when I was a student in Stuttgart from 1977 on;
until the machine went out of service in 1981.
Kind regards
Bernd Oppolzer
Am 13.01.2017 um 23:16 schrieb Bernd Oppolzer:
BTW: the teletypes were General Electric devices, and the paper tape
had 8 holes, not 5.
So every row on the tape could hold one 8-bit byte; I don't know what
coding it was.
The machine had neither ASCII nor EBCDIC; it was another special
Telefunken code (Zentralcode).
The General Electric teletypes and the display terminals (text and
even vector graphic devices)
were not directly attached to the TR 440; there was a TR 86 S
satellite computer doing the I/O work.
This was in the late 1970s.
Kind regards
Bernd
Am 13.01.2017 um 23:05 schrieb Bernd Oppolzer:
When I worked as a student at the university of Stuttgart, Germany
with the Telefunken TR 440 mainframe, before I had access to the
display terminals,
I had to use the card punch (IBM 29, IIRC). But there were also some
teletypes
attached to the machine, which could be used for a time sharing
dialog, and some
of them had a paper tape reader/puncher attached.
So you could use this paper tape in the following way:
when finishing work on one day, you could print your source code to
the teletype;
before output starts, you switched on the paper tape punch, and this
way you produced
a paper tape of your source code. (You had to finish before 7.15 pm,
that was GSP-ENDE,
end of dialog, otherwise your work was lost).
Next day, you used the paper tape to read your source code again into
the machine
via the same teletype.
This was very convenient; the paper tape was much smaller than a big
box of punched cards
and you hadn't to wait for the operator to process your punched cards
(which was closed shop).
We didn't have access to the LFD (langfristige Datenhaltung = long
term storage on disks etc)
at that time.
Kind regards
Bernd
Am 13.01.2017 um 22:26 schrieb Mike Myers:
For the education of the newbies, I'm going to take paper tape back
to the '60s. I was in the Air Force from 1960-1964 as an electronics
technician maintaining cryptographic equipment, some of which was
used with teletype equipment. Teletypes used a 5-bit code called
Baudot code. For those of you who have heard the term baud before,
it represented a single character in the Baudot code. There was a
specific code that shifted between letters and numbers/figures
modes, so that there could be more than 32 values represented.
Messages could be punched onto a paper tape from a keyboard and then
later transmitted through a tape reader into a communications link.
Or, on the receiving end, a message could either be printed by a
teletype or punched into a paper tape for further transmission or
later printing. The technology was eventually used with early
computers, as you are hearing here.
Mike Myers
Mentor Services Corporation
On 01/13/2017 03:35 PM, David W Noon wrote:
On Fri, 13 Jan 2017 14:21:58 -0600, Tom Marchant
(0000000a2a8c2020-dmarc-requ...@listserv.ua.edu) wrote about "Paper
tape
(was Re: Hidden Figures)" (in
<3742476116017335.wa.m42tomibmmainyahoo....@listserv.ua.edu>):
On Fri, 13 Jan 2017 13:56:57 -0600, Mike Schwab wrote:
https://en.wikipedia.org/wiki/Punched_tape
About 1974-75, I lived with my dad, manager of a Kroger store. At
night he would insert various strips of punch film into a reader to
report the store's daily transactions.
Well into the 1970's almost every mainframe shop used paper tape.
What was it used for?
In the mid 1970s I was working for a multi-national chemical
company in
Melbourne, Australia. We had 2 paper tape readers and 1 paper tape
punch. They were used mostly for threatening young programmers who
spoke
derisively about punched cards. ... :-)
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