I put a few digital camera photos of a old braille terminal (Feb 1977 vintage)
in a directory at
http://www.cs.umn.edu/~lemay/braille
These are 1280x960 jpg images, not at the highest image quality setting
for the camera. Most of the photos are of the interior of the unit, ie,
the power supply and the card cage. The card cage is made of wood.
I'm not quite sure what to do with this unit. There probably werent many
braille terminals made in the 70's, and like most things, they probably
were disposed of when they became obsolete. Maybe this should be donated
to a computer museum.
Of course, I wrote down some chip numbers and such, and promptly lost
the sheet of paper I wrote it down on.. I think it was made by
Triformation Systems Inc. Model LED-120. The grey socketed chip
was a F 8003 or was that 8002? The 3 chips with white stickers on
them are the same chip number, probably some sort of prom. The large
black chip, possibly a cpu of some sort, i forget the number exactly..
Trying to read it from the photo, it looks like 6503N, from i think
national semiconductor (it has a dual ~ followed by a / as some sort
of identifiying symbol).
Well, hopefull someone is interested in seeing this.
-Lawrence LeMay
lemay_at_cs.umn.edu
Received on Sun Aug 22 1999 - 19:42:30 BST