18 Oct
2004
18 Oct
'04
10:59 p.m.
Thus wrote dundas(a)caltech.edu:
Seem to remember RMIT's EduSystem used mark-sense cards as the Tech
College couldn't afford the the teletype/papertape configuration. Was
there a -15 version?
Regards,
Garry Page
Which reminds me there used to be a series of
"EduSystems" for the PDP-8
as I recall. -25, -30, etc. The one I used was TU-55/-56 based, though
one or more might well have been disk-based. Have any of these been
recovered?
Hmmm. Somewhere around here [*] I've got paper tapes of Edu-20 and
Edu-20-C, both BASIC multiuser systems for 8K+ PDP-8s. They were both for
paper-tape-only systems, say schools that could only afford the basic 8K
machine and a few Teletypes. (The Edu-20-C was basically an Edu-20 system
which could use Edu-25 commands.) 
20 Oct
20 Oct
3:03 a.m.
At 8:59 PM +1000 10/19/04, Unibus wrote:
Yes, I still have a few of those cards laying around. Also have the
plastic template (sometimes) used to help code various binary things
on the cards. Quite interesting. It would be fun to find the right
reader for these.
One of the interesting applications for these was contributed to the
DECUS program library by a high school here in southern California
(Lompoc, or thereabouts, ISTR). The application was a football
scouting program. Specially printed cards were given to the scouts
to mark. The cards recorded each play in some detail. The data on
the cards were then analyzed by the program and opponent tendencies
charted. [I thought I had a copy of the program somewhere. I'll
need to look further.]
-15 sounds plausible from my faulty memory. IIRC, there were 5 or 6
versions of EduSystem, all with slightly different feature sets.
I think we've got a pretty good handle on the PDP-11 OSs, it would be
nice to develop the definitive list (and then archive) of PDP-8 OSs.
John
Thus wrote
dundas(a)caltech.edu:
Seem to remember RMIT's EduSystem used mark-sense cards as the Tech
College couldn't afford the the teletype/papertape configuration. Was
there a -15 version? Which reminds me there used to be a series of
"EduSystems" for the PDP-8
as I recall. -25, -30, etc. The one I used was TU-55/-56 based, though
one or more might well have been disk-based. Have any of these been
recovered?
Hmmm. Somewhere around here [*] I've got paper tapes of Edu-20 and
Edu-20-C, both BASIC multiuser systems for 8K+ PDP-8s. They were both for
paper-tape-only systems, say schools that could only afford the basic 8K
machine and a few Teletypes. (The Edu-20-C was basically an Edu-20 system
which could use Edu-25 commands.)
21 Oct
21 Oct
3:27 a.m.
In a bit of a follow-up to myself, I managed to locate one of the
mark-sense cards and the template I referred to earlier. Some
(crude) pictures may be view of each of theses at:
<http://dundas-mac.caltech.edu/~dundas/retro/mark-sense.html>
John
3:52 a.m.
>> In a bit of a follow-up to myself, I managed
to locate one
>> of the mark-sense cards and the template I referred to
>> earlier. Some
>> (crude) pictures may be view of each of theses at:
>>
>> <http://dundas-mac.caltech.edu/~dundas/retro/mark-sense.html>
>>
I havent seen those wince the mid 1970's!!!!!
Back when I forst worked on the PDP-8, the school district was using it for
automatic grading of multiple choice exams [among other things]. The system
had a flat scanner that would process a page that had been marked with a #2
pencil. I forget the dimensions and other details (it has been nearly 30
years), but I seem to remember that the sheet was 8.5x11. Was this a
"standard" type of peripheral????
8:08 a.m.
>> In a
bit of a follow-up to myself, I managed to locate one
>> of the mark-sense cards and the template I referred to
>> earlier. Some
>> (crude) pictures may be view of each of theses at:
>>
>> <http://dundas-mac.caltech.edu/~dundas/retro/mark-sense.html>
>>
I havent seen those wince the mid 1970's!!!!!
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participants (4)
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dundas＠caltech.edu -
dvcorbin＠optonline.net -
tomj＠wps.com -
unibus＠gmail.com