[GreenKeys] M33 "O" (oh) vs "0" (zero)

[Jack]

And don't forget the "compressed type" version of a 33. It could
print the equivalent of 132 columns on the standard platen. The
spacing wheel, belt and typewheel were "special". Of course, it
was almost unreadable....

I have a "compressed type" model 28 typing unit that can't do
132 columns, but it probably does something around 100 character
spaces per line...


Jack K0TTY





-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Don Robert
House
Sent: Saturday, April 17, 2010 9:31 PM
To: Chris Elmquist
Cc: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] M33 "O" (oh) vs "0" (zero)

Chris,

The practice of putting a slash through Zero is strictly French and  
Military.
At our Teletype shop we had several different M33 type wheels.

The appearance of the "Computer O" with the slash was surprising to us
at the time, but we had more orders to put the slash through the O
than
to put the slash through the Zero.

There was another oddity that I am having trouble remembering, however
I remember we had at least four different type wheels for 33s.

Don K9TTY



On 17 Apr 2010, at 5:02 PM, Chris Elmquist wrote:

My latest M33 rescue was rebadged by Anderson-Jacobsen and has an  
acoustic
coupler installed in the right half above the power supply.

Interestingly, the keyboard has a slashed O (oh) between the "I" and
the
"P" and then the zero is unslashed.  This is of course heresy for
those
of us that live in the 10th call district where we grew up knowing
that
zero was always slashed and oh never was :-)

The machien prints the slashed O when it should print an oh and it  
prints
the unslashed zero when it should print zero... so apparently the type
wheel is correct for this configuration of keyboard.

Was this a normal configuration at some point?  Or this is something
that Anderson-Jacobsen might have done custom?

My older M33 is not configured this way.  On it, the zero is slashed
and the oh isn't.  This older unit also has an "ALT MODE" key where
the
newer one has "ESCAPE".

Some of my research shows that there was a pre-ASCII 7-bit keyboard  
circa
maybe 1962 that had the ALT MODE and then there was an ASCII
conforming
keyboard around 1968 that introduced the ESCAPE key and became fully
ASCII compliant.   However it seems funny to me that the slashed O and
unslashed zero would have been in that configuration then too.

Chris NØJCF
       ^----- this should have a slash through it
-- 
Chris Elmquist

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