inspired by my work with Seagate hard drives from the '80s.

https://mastodon.social/@tubetime/112725171061929698

@tubetime Sure, cuz it might explode then…

@tubetime I wonder if ElectroBOOM knows.

@tubetime

"Misapplication hazardous"?

No kidding. I wouldn't want to be in the same room as that monster.

@tubetime What’s the password, on my screen it just shows a bunch of asterisks

@tubetime it has power help!

@tubetime not a datasheet, but there’s a description of it on page 84 of the Feb 1982 issue of Radio Electronics magazine: https://www.worldradiohistory.com/Archive-Radio-Electronics/80s/1982/Radio-Electronics-1982-02.pdf

@tubetime It is a monolithic SCR array. The datasheet is in the 1982 Sprague databook here ... https://www.rsp-italy.it/Electronics/Databooks/Sprague/_contents/Sprague%20IND502%20Integrated%20Circuits%201982.pdf

@tubetime Page 84 of this PDF is not already found :

https://www.worldradiohistory.com/Archive-Radio-Electronics/80s/1982/Radio-Electronics-1982-02.pdf

@tubetime It bloopes.

@tubetime some sort of CRT test device maybe? Neat!

@tubetime
Surley it blops!

@tubetime something something @TechConnectify something

@tubetime I thought this was an elaborate Micromachines playset when it first popped up. I guess in many ways it is.

@tubetime
It's beautiful! :-D

@tubetime First HD - 1956.
First floppy 1971.
AFAIK

@tubetime the IBM team that makes the 5150 didn’t get the memo 😂

@tubetime look, it takes time for the platters to ripen. It's just physics!

@Natasha_Jay Do "Jacob's Ladder To Heaven"!

@Natasha_Jay Resistance is futile…

@tubetime Now THIS is entertainment for casting to the Big Screen!

@tubetime Thanks for all this hard work. It’s gonna be so awesome to be able to play the ST-225 in MAME when you’re done! Or is the goal even loftier…running Doom directly on the ST-225 itself?

@DevinsBench I see you got the organic ones. Sadly here they're full of GMOs

Pic from SiliconInsider

@tubetime

Histotical accuracy, a lead free solder free zone.

@bitsavers Reading this news, a little bit of me just died.

@bitsavers @larsbrinkhoff WTF

@bitsavers this is sad, LCM+L was a very special place...

@tubetime wow!

@tubetime I CAN'T BELIEVE IT'S NOT DRAM!™

@tubetime I believe that’s a 128K x 8 SRAM made by Electronic Designs Inc. They bought wafers from manufacturers that didn’t sell military grade product, then assembled/tested them for that market.

@tubetime Been in platter labs in bunny suit with microscope.

Confirm.

@tubetime Ah thats why a head crash removes that much magnetic material on the track.

it came with a companion photo, this time of a die marked "1DX4A". there's some weird stuff going on in there...

@tubetime

Could look like one of the custom chips a high performance pattern generator ?

@tubetime that took me a minute to process the image because I thought the holes on the left were cups of tea!

@tubetime Do you have a scope for soldering that fine of a pitch?

@tubetime That almost qualifies as Wire Bonding 👍

@gigabecquerel How many watts? I’m thinking about under the 110 voltage in America, the bulb will only have 1/4 of its nominal power, will it still glow?

@gigabecquerel A little bulb of pun. :)

@gigabecquerel 😍

Those individually packaged transistors and diodes sure look like the packaging should be more expensive than the component itself

@tubetime Damn, those are some vintage Trash Shack parts.

@tubetime « Butt connector »? Can’t figure out how it works!

@tubetime i grew up not far from charwelton, one of BT’s microwave backbone towers

https://www.dgsys.co.uk/btmicrowave/sites/151.php

*falls into a rabbit hole*
Did you know there was a troposcatter radio link between West Germany and West Berlin?