geekhack
geekhack Community => Keyboards => Topic started by: gamariel on Fri, 22 February 2019, 16:16:09
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Hello, i search but couldn't find information about this keyboards.
https://www.olx.pt/anuncio/teclado-epson-IDCLXLc.html#f5e86e6e3c
https://www.olx.pt/anuncio/teclado-computador-redstone-IDCLX0v.html#f5e86e6e3c
Are they mechanical?
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All keyboards are mechanical.
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First: Fujitsu rubber dome, like the FMV-KB312 (http://ex4.sakura.ne.jp/kb/main_fujitsu_fmv-kb312.htm). ( Japanese, but same style otherwise)
Second: Chicony KB-5160 (https://deskthority.net/wiki/Chicony_KB-5160), which could have any of several mechanical switches.
I don't know any of these in particular. I just had an inkling that the first could be Fujitsu and the other one I knew I had seen before and could be a Chicony, and then I searched on these sites.
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All keyboards are mechanical.
Some are memberane
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Like membrane buckling springs?
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Some are memberane
When people say "membrane keyboard" they often refer to there being a sheet with rubber domes, but that is incorrect usage.
The term actually refers to what is often underneath the domes: one or more flexible plastic membrane sheets. They are usually three: top and bottom layer with traces and a middle layer with holes. The top membrane will not sag into the hole but you could press it down to make both membranes connect.
A pure "membrane keyboard" would not have anything on top: The user would press the membranes directly. For instance the Atari 400 (https://en.wikipedia.org/wiki/File:Atari-400-Comp.jpg) and the Sinclair ZX81 (https://en.wikipedia.org/wiki/ZX81#/media/File:Sinclair-ZX81.png) 8-bit home computers had pure membrane keyboards.
People on this board have discussed about the precise meaning of the word "mechanical keyboard" for too long without getting anywhere. By one definition, a mechanical keyboard is any that has moving parts.
By another, there would need to be conductor-to-conductor contact inside the switch mechanism (which would exclude the IBM Model M's buckling-spring over membrane).
By another more strict definition, there would need to a mechanical linkage (https://en.wikipedia.org/wiki/Linkage_(mechanical)) inside the switch mechanism.
Others use it just to mean a keyboard of higher quality: for instance letting the Topre switch be in effect an honorary mechanical key switch.
Mr no, the other guy (with the salad fingers) is just playing with you about the terms.
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Like HP KU 0316, and Buckling springs. Only difference is that in buckling springs you still have the feels of a mechanical.
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All keyboards are mechanical, except for those light projection things.
Are switches mechanical? If there are discrete little boxes that make and break electrical contact within themselves, then yes, certainly.
If there are mechanisms that then activate actual non-mechanical electrical contacts, then there could be a logical argument that these are not "mechanical switches" since the word "switch" implies the activation of the electrical connection.