Microswitch_Keyboard_Brochure_1972.pdf

Slom

12 Apr 2020, 09:25

I have not seen this before ...

So at least some of the SW keyboards have NKRO? :evilgeek:

http://bitsavers.informatik.uni-stuttga ... e_1972.pdf

Has anyone ever seen this contact mechanism in the wild?
mercury.PNG
mercury.PNG (268.07 KiB) Viewed 586 times

User avatar
Chyros

12 Apr 2020, 10:19

Haha wow, so mercury keyboard switches DO exist! xD Great find mate! :D

Findecanor

12 Apr 2020, 11:03

Looks dangerous. Mercury in flexible tubes? Those would break eventually, and you don't want that.

User avatar
Chyros

12 Apr 2020, 13:52

Findecanor wrote:
12 Apr 2020, 11:03
Looks dangerous. Mercury in flexible tubes? Those would break eventually, and you don't want that.
Yeah, I'm not sure how well those tubes would hold up over time, either. Might be a bit messy. Shouldn't be TERRIBLY dangerous though.

User avatar
fohat
Elder Messenger

12 Apr 2020, 15:21

How genuinely bizarre.

It seems like you could spend a thousand years imagining ways to create an off-on electrical switch without dreaming up something like that!

MMcM

12 Apr 2020, 16:36


User avatar
robo

13 Apr 2020, 18:29

Next up. The radioactive decay switch: Depressing the key opens a small lead flap exposing a tiny cube of cobalt 60 to a glass vial of gas containing two high voltage electrodes. The ionizing radiation causes current to flow between the electrodes, which is detected by the keyboard controller, and translated into a keypress.

Comes standard with lead keycaps and a 2kV transformer. Oh, and a built in ashtray of course.

Slom

13 Apr 2020, 20:23

When the side note takes over the show :D

Should have posted this picture:
sw_nkro.PNG
sw_nkro.PNG (433.78 KiB) Viewed 369 times

Post Reply

Return to “Keyboards”