For the 2741 there were (at least) two typeball mappings, one called
'BCD' and the other 'Correspondence', and the keyboard layouts were
different. 'Correspondence' was what the IBM typewriters used, and
you could use regular typewriter typeballs on a 'Correspondence'
2741, BCD was the 'computer' layout. We had both of these, including
APL typeballs for both versions. I still have a small box of random
typeballs around somewhere. IIRC, the 'console' Selectrics were all
BCD mapping, but I'm not certain.
As to modified Selectrics with interfaces added, I had an ITEL/Dura
'wide tabletop' unit, and one surplussed from a financial company
that was also tabletop, but high rather than wide. I used both as
printers with my CP/M system at home, the ITEL unit being the
flakier of the two...
134.5 bps was slow, but faster than the ~45 bps Model 56 Teletype
that it replaced! Much better character sets too! :-)
- Richard, VE7CVS
On 12/23/21 11:55 AM, Mark L. Gaubatz
via groups.io wrote:
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Sorry, but
if you¡®re talking about true classics, it was normally an
underscore above the 6. The cent sign was usually/frequently
with the at (¡°@¡±) sign next to the margin release (¡°MAR
REL¡±) key. Then there were the other keyboards with no cents
whatsoever. At least the 029/129 keypunch had some cents
with the cent sign located above the R ¨C a great improvement
over having multipunch the column with the 026. Or the
non-cents with the Telex ASR 33 as well as with most modern
non-programmable keyboards. It would be nice if the
manufacturers would at least have some cents-ability and
provide offerings with some cents once again. ?
?
With the
Selectric, Remington SR101, IBM 2741, and other similar
keyboard/typewriters, it depended on the typeball that was
in use ¨C NOT the keyboard for anything other than input,
unless one replaced the key caps and selected the proper
translation table. And for output with those that were used
for I/O capabilities and the typeball had been replaced with
an alternative typeball and a wrong translation table as
well? How good are your basic cryptography skills? And when
this was done with the 1052 console???
?
The 1130
and 2741s, when equipped with the APL typeball and keyboard,
the keyboard also had no cents.
?
Mark
