Zarion ZoryIf you were offered with an absolute, objective evidence that your life—and the lives of everyone you love—served no purpose other than to act as a cursory biological data point for a system that doesn't care about you, would you choose to delete that truth from your brain and live a charming lie, or would you let the truth demolish your ability to ever feel happy again?
Ivaylo IvanovRegression learns from examples.
House size → house price.
Repeated many times.
Patterns don’t come from one data point — they emerge from many.
#manytimes #house #houseprice #timepatterns #datapoint #examples
Bread80The key switches I chose for the Datapoint 2200 keyboard required a plate so I made one up. Done as a PCB it’s not cheap but the Matt black finish works really well.
The only issue is that it slightly obstructs a couple of capacitors 🙁
I still need to source the hardware to properly mount it to the keyboard.
RetrobytesArcnet - It was a contender
Arcnet - It was a contender
Arcnet - It was a contender
Arcnet - It was a contender
Top row numbers can be shifted and keypad numbers can't. Both share an edge detector circuit and multiplexer 'line'. Top row key short to ground whereas keypad key have an SIO (or S10) signal. The keyboard logic board uses an analogue edge detector with 74121 pulse generator.
On the Pico I'm handling this by driving the SIO line low. When a keypress is detected I drive it high. If the keypress is still detectable then it's a top row key. If not then keypad.
The #Datapoint2200 keyboard PCBs have arrived and they look fantastic. Somehow larger than I expected, and very imposing.
#datapoint #ttlcomputer #vintagecomputer #retroconputer #mechanicalkeyboard
Cathy GellisWent out to dinner tonight with a red friend. Not a lawyer, not online, said he gets most of his info from the WSJ.
Anyway, he wants Trump gone. #datapoint
RE: https://bsky.app/profile/did:plc:cz3p35o2uexpt6l5sngcnu2j/post/3lkqzv3ts722h
RE: https://bsky.app/profile/did:plc:cz3p35o2uexpt6l5sngcnu2j/post/3lkqzv3ts722h
I've now added some photos to the repository (link in previous toot). Not the best quality but there's now something to look at.
Here's a couple of those for the Decoder PCB. There are more in the repository itself.
I've just pushed a very long overdue update to my Datapoint 2200 repository.
New stuff includes schematics for video, keyboard and keyboard logic.
I've added a fair few LEDs to the processor PCB for most of the main registers, but I need to analyse which other signals deserve to have them.
I also need to add some photos and PCB renders to the readme.
