[Photos] Graphon 250 Terminal Keyboard

I took pictures of another board. This one is from a GraphOn Terminal.

DSC01737terminalboard.JPG
graphon terminal keyboard
DSC01737terminalboard.JPG (384.91 KiB) Viewed 291 times


Notable features...none.
Well, it is constructed a bit weird, see below.
I also can't find that switch in the vintage switch wiki over on GH. Does anybody know what it is?

Here are more pictures:

After opening the case clean and simple with six screws this is what's inside:
DSC01739plate.JPG
inner part
DSC01739plate.JPG (434.67 KiB) Viewed 291 times

Very clean. I like it.

DSC01752back.JPG
inner part (back)
DSC01752back.JPG (398.23 KiB) Viewed 291 times

Lots of tiny little screws. This is the strange part. The switches are stuck in the front plate as usual but then the back plate is screwed to some of the switches. O_o

Under the back plate is a matrix.
DSC01744matrixandswitchbacks.JPG
matrix and switches under it
DSC01744matrixandswitchbacks.JPG (470.24 KiB) Viewed 291 times


The switches have a small spring inside the bottom that presses on the matrix.
DSC01748switches.JPG
switches
DSC01748switches.JPG (256.97 KiB) Viewed 291 times


and inside the switches is another spring that keeps the slider up.
DSC01747switchdisass.JPG
disassembled switch
DSC01747switchdisass.JPG (167.7 KiB) Viewed 291 times


Now, what's the name of this switch? :mrgreen:

BTW: It's linear and feels neither particularly good nor bad.
Icarium
User avatar

Unread post15 Jun 2012, 20:24

User avatar
X
Icarium
 
Posts: 1476
Joined: 11 Jan 2012, 17:22
Location: Germany
Main keyboard: These fields just
Main mouse: opened my eyes
Favorite switch: I need to bring stuff to work
 
If anybody is interested in the switches, this looks like the same thing: http://www.ebay.de/itm/DIGITAL-Tastatur ... 3a75910366
Icarium
User avatar

Unread post15 Jun 2012, 21:08

User avatar
X
Icarium
 
Posts: 1476
Joined: 11 Jan 2012, 17:22
Location: Germany
Main keyboard: These fields just
Main mouse: opened my eyes
Favorite switch: I need to bring stuff to work
 
I haven't seen the switches before. But I think I've read a patent with switches that looked similar.
HaaTa
User avatar

Unread post16 Jun 2012, 02:25

User avatar
X
HaaTa
 
Posts: 364
Joined: 31 Jan 2011, 07:27
Location: Waterloo, Ontario, Canada
Main keyboard: Depends the day
Main mouse: CST L-TracX
Favorite switch: Fujitsu Leaf Spring/Topre/BS
 

Who is online

Users browsing this forum: hasu, tipo33 and 11 guests

cron