Page 1 of 1
Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 09:25
by Slom
I have not seen this before ...
So at least some of the SW keyboards have NKRO?
http://bitsavers.informatik.uni-stuttga ... e_1972.pdf
Has anyone ever seen this contact mechanism in the wild?
- mercury.PNG (268.07 KiB) Viewed 3528 times
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 10:19
by Chyros
Haha wow, so mercury keyboard switches DO exist! xD Great find mate!
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 11:03
by Findecanor
Looks dangerous. Mercury in flexible tubes? Those would break eventually, and you don't want that.
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 13:52
by Chyros
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.
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 15:21
by fohat
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!
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 12 Apr 2020, 16:36
by MMcM
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 13 Apr 2020, 18:29
by robo
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.
Re: Microswitch_Keyboard_Brochure_1972.pdf
Posted: 13 Apr 2020, 20:23
by Slom
When the side note takes over the show
Should have posted this picture:
- sw_nkro.PNG (433.78 KiB) Viewed 3311 times