This is the Track House Standard IIe Tender Keypad for the Apple IIe.
It connected to a parallel port via a DB-25, which ends up being pretty wasteful. Some of the connector pins are left out. That AMP connector has 26 conductors; 5 of its pins aren't even soldered in; others are connected to the DB-25, but otherwise don't do anything. The 13 that are connected give a 8x5 matrix, so up to 40 switches. There are only 27 actual switches.
It's trivial to implement as a standard QMK matrix. Since we can pick the voltage, a Teensy LC will do.
Normally, this wouldn't be worth much attention, even with a few interesting choices of key legends. But the PCB itself is pretty remarkable.
Compare it with The Keyboard Company's more-or-less equivalent Numeric Keypad IIe from the wiki or its later rebranding which saved some copper.
The ink has worn off, but the company name is embossed on the rubber insert in the upper-left and almost visible in the photo, as well as printed on the back label.
I has some so-so double-shot keycaps and plate-mounted switches that I don't recognize. There are no active components inside; the AMP connector has a date code for 1984, which seems about right.
It has unshifted parentheses, though I have to suppose they were for negative entries in accounting. I am not sure why a ? warranted space. It probably did something significant in the accompanying software.Standard IIe Tender Keypad
Jump to
- Discussions
- ↳ Keyboards
- ↳ Mice & other input devices
- ↳ News & reviews
- ↳ News
- ↳ Reviews
- Knowledge base & media
- ↳ Gallery
- ↳ Workshop
- ↳ Deskthority wiki talk
- ↳ Deskthority wiki
- Other
- ↳ Marketplace
- ↳ Member to member
- ↳ For sale
- ↳ Want to buy
- ↳ Want to trade
- ↳ Group buys
- ↳ Other
- ↳ External
- ↳ Vendors
- ↳ eBay
- ↳ Taobao
- ↳ Other external
- ↳ Marketplace Help
- ↳ Try before you buy
- ↳ Off-topic
- ↳ Other languages
- ↳ Diskussionen auf Deutsch
- ↳ En français
- ↳ Português
- Deskthority
- ↳ Deskthority talk
- ↳ Archive
- ↳ Deskthority Awards 2018
- ↳ DTA News
- ↳ Call for nominees
- ↳ Final Vote
- ↳ Deskthority Awards 2017
- ↳ Results
- ↳ Final vote
- ↳ Vote for nominees
- ↳ Call for nominees
- ↳ DTA news
- ↳ Deskthority Awards 2016
- ↳ Results
- ↳ Final vote
- ↳ Vote for nominees
- ↳ Call for nominees
- ↳ DTA news
- ↳ Deskthority Awards 2015
- ↳ Results
- ↳ Final vote
- ↳ Vote for nominees
- ↳ Call for nominees
- ↳ DTA news
- ↳ Deskthority Awards 2014
- ↳ Results
- ↳ Final vote
- ↳ Vote for nominees
- ↳ Call for nominees
- ↳ DTA news
- ↳ Deskthority Awards 2013
- ↳ Results
- ↳ Final vote
- ↳ Vote for nominees
- ↳ Call for nominees
- ↳ DTA news
- ↳ Deskthority Awards 2012
- ↳ Deskthority Awards 2011
- ↳ Support Deskthority
- ↳ Club discussions & votes
- ↳ Club management
- ↳ Deskthority club launch
- ↳ Geekhacker refugee camp
- ↳ Sinklist Archive
- ↳ Forum software translations