HP 2644A Terminal Keyboard
- JP!
- Location: United States
- Main keyboard: Currently a Model M
- Main mouse: Steel Series Sensei
- Favorite switch: Beam Spring
- DT Pro Member: 0194
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I just picked up this HP 2644A terminal keyboard because it looked neat. I believe it is from 1975 based on the date code and the timeline from the HP computer museum. Other than that I don't know anything about it. Maybe someone here has an idea what kind of switches it might have. I likely won't have it in my possession for about a week.
http://hpmuseum.net/display_item.php?hw=240
Here is an example of a restored keyboard.
http://www.juliepalooza.com/sl/hp2644a.htm
http://hpmuseum.net/display_item.php?hw=240
Here is an example of a restored keyboard.
http://www.juliepalooza.com/sl/hp2644a.htm
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
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Nice one, it may have the Hi-Tek linear type switch:
wiki/Hi-Tek_linear
http://terminals-wiki.org/wiki/index.php/HP_2640A
wiki/Hi-Tek_linear
http://terminals-wiki.org/wiki/index.php/HP_2640A
- snuci
- Vintage computer guy
- Location: Ontario, Canada
- DT Pro Member: 0131
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- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
Seeing is believing. Looking foreward to your pictures, Im assuming you do not mean your HP 9830A.
- snuci
- Vintage computer guy
- Location: Ontario, Canada
- DT Pro Member: 0131
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No, I don't mean the 9830A. After some searching, I recall why I never took pictures. Haata already did. This keyboard should have ITW magnetic valve switches. Pictures are here: https://www.flickr.com/photos/triplehaa ... 8986/page1
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
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Ha! Both of us got it wrong, but Im pretty sure I had a look at Haatas before also. I had a chance to buy one of these ages ago but passed it up at the time...snuci wrote:seebart wrote: After some searching, I recall why I never took pictures. Haata already did. This keyboard should have ITW magnetic valve switches. Pictures are here: https://www.flickr.com/photos/triplehaa ... 8986/page1

- snuci
- Vintage computer guy
- Location: Ontario, Canada
- DT Pro Member: 0131
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Technically, only one of us is wrong. If I recall, it has one lone Cherry switch and that was the one I remembered

- Daniel Beardsmore
- Location: Hertfordshire, England
- Main keyboard: Filco Majestouch 1 (home)/Poker II backlit (work)
- Main mouse: MS IMO 1.1
- Favorite switch: Probably not whatever I wrote here
- DT Pro Member: -
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Maybe reset terminal bypasses the keyboard logic circuitry, and consequently needs to be a simple pushbutton without any complex drive electronics requirements. Magnetic valve switches have to go through the controller to function.
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
No because I clearly remember seeing one of these with Hi-Tek modular switches years ago, but your dogmatism makes me apathetic to this, just the type of attitude I dont need more of.snuci wrote:Technically, only one of us is wrong. If I recall, it has one lone Cherry switch and that was the one I rememberedLook at the "Reset Terminal" key. No idea why it is a Cherry switch. Maybe the gold cross point was quicker than the magnetic valve? That's pure speculation. We'll confirm when JP! get's hers. Nice terminal!
- Daniel Beardsmore
- Location: Hertfordshire, England
- Main keyboard: Filco Majestouch 1 (home)/Poker II backlit (work)
- Main mouse: MS IMO 1.1
- Favorite switch: Probably not whatever I wrote here
- DT Pro Member: -
- Contact:
See, this is why you're supposed to document things on the wiki, then such pointless arguments become impossible.
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
Inherently the sensible approach which is often not possible, like I wrote I never bought or physically saw it which makes all this worthless. Apart from that this is not an "argument" to me, just not enough substance here.
- snuci
- Vintage computer guy
- Location: Ontario, Canada
- DT Pro Member: 0131
- Contact:
Sorry seebart. My "only one of us is wrong" comment was meant to be playful. I only have one keyboard of thousands; maybe tens or hundreds of thousands. Who knows if they didn't produce these for a number of years and then switch to Hi-Tek at some point? I don't know so you won't get an argument from me. I will document mine and, if different, I hope JP! will document this one. I just have a lot of vintage computer projects at this time so I'm slower than my usual slow pace.
- JP!
- Location: United States
- Main keyboard: Currently a Model M
- Main mouse: Steel Series Sensei
- Favorite switch: Beam Spring
- DT Pro Member: 0194
- Contact:
Thanks everyone for the comments. I will post some pictures in a few days and of course make sure things make it to the wiki.
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
No offence taken! I was primarily angry with myself because I can not remember when and where I saw that HP 2644A. Looking foreward to more on both of your HP's.snuci wrote:Sorry seebart. My "only one of us is wrong" comment was meant to be playful. I only have one keyboard of thousands; maybe tens or hundreds of thousands. Who knows if they didn't produce these for a number of years and then switch to Hi-Tek at some point? I don't know so you won't get an argument from me. I will document mine and, if different, I hope JP! will document this one. I just have a lot of vintage computer projects at this time so I'm slower than my usual slow pace.
- Daniel Beardsmore
- Location: Hertfordshire, England
- Main keyboard: Filco Majestouch 1 (home)/Poker II backlit (work)
- Main mouse: MS IMO 1.1
- Favorite switch: Probably not whatever I wrote here
- DT Pro Member: -
- Contact:
Don't think I've seen that mount on an ITW switch before — reminds me of the keystems in [wiki]Tokai MM9 series[/wiki].
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
- Nuum
- Location: Germany
- Main keyboard: KBD8X Mk I (60g Clears), Phantom (Nixdorf Blacks)
- Main mouse: Corsair M65 PRO RGB
- Favorite switch: 60g MX Clears/Brown Alps/Buckling spring
- DT Pro Member: 0084
This metal thing looks like a retaining ring, possibly to stabilize the mount and prevent it from splitting?
- seebart
- Offtopicthority Instigator
- Location: Germany
- Main keyboard: Rotation
- Main mouse: Steelseries Sensei
- Favorite switch: IBM capacitive buckling spring
- DT Pro Member: 0061
- Contact:
Right. Pretty massive retaining ring. Of course this HP is a "massive" keyboard!Nuum wrote: This metal thing looks like a retaining ring, possibly to stabilize the mount and prevent it from splitting?
