deskthority

matt3o wrote: ↑I don't think pushing all edits in the spy is a good idea. We either create a new "wiki spy" or make it so only huge edits or new pages are sent to the standard spy.

Is there anything wrong with just looking at this page? wiki/Special:RecentChanges

Awesome post. Perhaps the AKB-3320 = JIS and AKB-3420 = ANSI?

Welcome to the "Alps AKB" Club!

Hi Luca,

Is that the schematics for the 5110 keyboard? I did everything I could but the schematics I had are unreadable. It was not just water that made the pages stick together but some type of chemical that completely messed up the text/diagrams. This is very unfortunate

Just so yo guys know, I am soaking the Logic Manual. It is a pack of schematics that I can hopefully get apart. There is a keyboard schematic in the bunch but it looks moldy, unfortunately. Let's see what happens. It's not looking good. Let's see when in dries in a day or so. I can't open it or it ...

Just so yo guys know, I am soaking the Logic Manual. It is a pack of schematics that I can hopefully get apart. There is a keyboard schematic in the bunch but it looks moldy, unfortunately. Let's see what happens.

snacksthecat wrote: ↑I actually just tried that as well as cmd + \ and both are the same result as trying backslash alone.

Then you are not reading key code values.

snacksthecat wrote: ↑unfortunately no other keys produce any output at all.

Out of curiosity, how about "shift /" ? This is very strange.

snacksthecat wrote: ↑
On the bright side, I thought about this. Am I jumping the gun or is this really too coincidental to ignore???

Try "A" and see what you get.

Engicoder wrote: ↑@snuci, do you happen to have the schematics for the 5110 (i.e. Ibm 5110 System Logic Manual)

I have the 5110 System Logic manual and it is in one piece... literally. It is wrapped in plastic but water got to it and the pages are stuck together and it is petrified into one solid cube

I finally added a post on my site for the MCM/70 after taking extensive pictures and testing it out. You can find my post here, if anyone is interested: The Micro Computer Machines MCM/70, the Canadian Holy Grail of Computing History If anyone is curious about APL and how it is used, you can see me ...

Oh! On page 5-24 of the "IBM 5100 portable computer Maintenance Information Manual" https://www.slideshare.net/LeonHenry/1970s-manual-ibm there is a block diagram of how the main board handles the various parts of the assembly. If you need searchable manuals, please go to my site here: http://vinta...

Engicoder wrote: ↑@snuci, do you happen to have the schematics for the 5110 (i.e. Ibm 5110 System Logic Manual)

Interesting. I actually have a document set from a 5110 that I acquired a while back. I'll check.

@engicoder, if it turns out to be parallel I’ll buy you a beer Buy him a beer! The IBM "5120" is actually an IBM "5110 Model 3" so both keyboards are the same between as they are both 5110s. Note the scan codes and the bottom of this page explanation on how the scan code is derived (from positive a...

https://www.ebay.com/itm/IBM-Teller-Computer/382618669758 Expensive. Such a cutie. I remember seeing a bunch of those keyboards (without the monitor) on taobao quite cheaply a while back. They might still be around. Missed this post. Here's the complete set up. That Teller computer is missing the m...

Sorry to hear about these setbacks. Are there individual components on the cards which could go bad or out of spec? Unfortunately, the ROS chips are "read only storage" or proprietary PROMs that are not available. They were only available as swappable cards. There are TTL chips on some of the cards...

Bass wrote: ↑I am starting to have a hunch that a different card (ROS control) could be the culprit too

I was afraid of that. An expensive goose chase, unfortunately. It also might have been the ROS controller (slot E) but buying one of those replacement cards and trying it is no guarantee either.

digital_matthew wrote: ↑The horizontal lines on the display are probably being caused by bad capacitors on the CRT control board.

He's got the brightness set too high

Screw LEDs. Incandescent bulbs is the way to go! These are the key switches on the console portion. They light up.

codemonkeymike wrote: ↑They wouldn't need to remove the internals.

I don't know exactly what was in them to begin with (I'll look around) but here are some quick pics while I have a little daylight light. How did they do in terms of what you were thinking?

Are you saying that all the pushrods, etc. have been removed and replaced with something else? This should be a really interesting tear down. And can the typewriter still be used standalone? I just got it last night and was confused about the Cherry keyboard. I will take pics to illustrate what thi...

Okay, here's the story. A company called CPT Corporation produced a CPT model 4200 that was a very early word processor. This system included a cassette based storage "console" that recorded keystrokes from a connected, modified IBM Selectric typewriter. Once you recorded a letter, you could play it...

What, if any, models of IBM Selectrics came with Cherry key switches?

Olivetti Snap-action? https://deskthority.net/wiki/Olivetti_snap_action No. That is what Haata's example has. They look identical from the top but not the bottom. The patent got me looking at other patents from Olivetti and you can see this particular switch in this patent: https://patents.google.c...

Got this keyboard a little while ago. I am impressed at how clicky these min-domes are but I can't figure out what makes it click exactly. This is a great keyboard and I believe it is OEMed from Olivetti. I don't know who makes the keyboard mechanism/switches. It IS similar to one posted by Haata he...

Chyros wrote: ↑Eh, if you're certain about the foam and foil, why exactly are you asking about it? xD

I never really know by looking at key caps but lots of people here seem to be able to tell by looking at the font, key cap construction, etc. I couldn't find a Keytronic with that font and Return key style.

Maybe not! Did you see the TV typewriter cookbook, or the Popular Science article that tells how to make your own keyboard? This looks VERY similar. This one has a parallel (or possibly serial) interface so there may be some processing in it but it wouldn't be a full-blown computer. My other Home-m...

Not sure if anyone was watching this but I just bought it. I am certain it's a Key Tronic foam and foil but it is pretty special for a computer guy and I am itching to find out what's inside. I did not pay the asking price. Am I right about the foam and foil?

Morron wrote: ↑Thanks! I'll have to do some research and see if it's worth a buy

It is definitely Digital Equipment (DEC). Please find out what the unit on the left is. I've seen them but it's driving me crazy trying to recall what it is.

Very nice! I am always a PM away for any help/advise. If you haven't found the maintenance manual, I scanned mine and put it here.

Nice review. I added some pictures of one if my latest computers that use the Maxi Switch magnetic reed switches here for reference to show something that uses them as well.