>
>If we're talking about hundreds or more, you want an automated solution.
>There are several companies which have sold modernish punched card
>readers in the past couple of years with RS-232 interfaces on them;
>the ones I see most often are Mountain Computer units which are about
>the size of a 2-slice toaster and can stack a couple of hundred cards in
>the input hopper. There's both a mark-sense and a punched-card version
>of this unit.
>
>Tim. (shoppa(a)triumf.ca)
So, pray tell... do you know what the difference is between the Mark Sense
and Punch Card versions of the Mountain Computer reader? (and how to tell
which is which?)
I have one of these units in my collection, and even though it happily
accepts the commands which should read punched cards, it always feeds one
card and then returns an error. So, I would start to think that it is the
mark sense version, but have never really found any identifiers on it.
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
>For one thing, why not build a reader? Ought to be a fun weekend
>project ;) The other question is whether the Scantron units use
>optics or electric sensors for checking multiple choice tests.
I'm not sure about this, but electronic makes a LOT more sense. That's why
whenevery ou fill in one of those bubble sheets, they make sure that you use
a "Number 2 pencil." Because it has carbon in it. With an optical solution,
anything from crayon to pen to marker should work, if it were black.
Just my 0.02...
Tim D. Hotze
Moving RSX from that RDwhatever that's making bearing noises to a RL02.
Copied all the data files and such to the RL, but the RL isn't bootable.
When I try booting it types ** THIS IS NOT A HARDWAREBOOTABLE VOLUME **
or something along those lines.
This is RSX11-M v4.1
It's a severely butchered configuration made for a graphics workstation
by Genigraphics, that I hope to try making useful.
If the command required doesn't exist, (Likely!) I cam reload RT-11
and kermit the RL up to a PC, put a bootblock on the front, download
it again, and go. Does that sound do-able?
-------
For one thing, why not build a reader? Ought to be a fun weekend
project ;) The other question is whether the Scantron units use
optics or electric sensors for checking multiple choice tests.
>The mark sense readers depend on a series of "timing marks" printed on
the
>(lower?) edge of the card in order to work and I don't think they're
very
>good at sensing anything but very dark marks (remember the "special"
(#1
>lead) pencils you had to use when you filled out those cards in grade
school?)
>
>Visit Doug Jones' web site and drop him an email. He's very interested
in
>punched cards and knows quite a bit about readers, old and new. And
while
>you're at it, invite him to subscribe to this list. ;)
>
>http://www.cs.uiowa.edu/~jones/cards/index.html
>
>--
>David Wollmann |
>dwollmann(a)ibmhelp.com | Support for legacy IBM products.
>DST ibmhelp.com Technical Support | Data, document and file conversion
for IBM
>http://www.ibmhelp.com/ | legacy file and media formats.
>
>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
Thursday was a pretty good day as I found the folowing: a real nice book
called Microprocessors and Microcomputers Manufacturer's Literature by the
learning tree, great information on microprocesors, microcomputers,
peripherals, logic analyzers, logic chips, probes, breadboard systems;
another by Horowitz and Hill The Art of Electronics; HP9121 model D; IBM
7207-001 tape unit; IBM 7210-001 CD-rom; Apollo monitor 17"; IBM 3363
cd-rom unit; VT240 unit; Honeywelll Bull computer; HP9816 monitor/terminal;
Mac 128k mouse;3M D-2500 character generator; Unite digital test board; NEC
PC-8201A computer; and other items not in the 10 year rule.
Anyone have a manual laying around for a Commode-Ore C128D? This is the
128 model that has the separate keyboard and built in drive and power
supply, in a PC style case. If anyone has one we can work out a good
price or swap something for it. I need it for my own machine that I
recently acquired and the regular 128 manual just doesn't get it.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
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Hello, all:
I just got myself a Diamond TrackStar Apple//-in-a-PC board. What little
info that I could find says that you can hook an Apple floppy drive to it.
However, in two places, the info says that it takes a standard Apple floppy,
and then it says a Unidrive.
Has anyone used this board? Which drive would it use? I know that it has
a 20-pin header on the board for the floppy. Any clues??
Rich Cini/WUGNET
<nospam_rcini(a)msn.com> (remove nospam_ to use)
ClubWin! Charter Member (6)
MCP Windows 95/Windows Networking
============================================
Turned up one of these on Friday. It has a 21 meg HD, an 8088, and is
about like having a flat bed scanner on your lap!
No power supply and battery pack (10 size "D" nicads) shot, but got it
working off my bench power supply. It appears to be working normally and I
think I can rig up a power supply from a Sony version for a portable VTR.
Is anyone familiar with this beast? It must be one of the earliest laptops.
I also got three C-64's in the '128 style cases, but didn't get into them
yet.
Regards
Charlie Fox
Sorry about not checking the reply-to address in the message to Bill.
I'm getting brain dead anymore and will move it to private email from
now on.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
