Keybort

This one is a MicroWeb Touch-1 XT/AT. Kinda.

See if you look up that keyboard you find the Deskthority page on it, showing this.
It's clearly pretty similar, but there are some differences.
Also that one uses a PC/XT/AT DIN5 connector, and this one uses some kind of RJ connector.
This one isn't in the greatest of shape, but considering I got it from the Chuck Colby estate sale, it's surprising it isn't completely water-damaged.
It's got some minor rust damage inside, where the metal clips rubbed off on the PCB.
And the control chip is a C35331E.
It's one of those chips you can find a few places that'll sell you one, but nowhere has a datasheet.
"8647" is probably a date code? 47th week of 1986.
That matches the chip on Deskthority.
And all keycaps removed! These are "Futaba MA series" (aka Futaba clicky switch) switches.
It's got 5 pins connected. AT is only 4 pins, but the PC/XT keyboard is 5 pins. So maybe this is a switchable keyboard?
the Deskthority wiki seems to partially agree with that:
There's a jumper under the tab key, which is theorized to be a XT/AT switch.
SO, what the heck is the pinout? I have no idea what the pinout of the IC is, and nothing to connect this to to spy on it, and no results online for googling the name other than the one that's shown up on deskthority.
Well, the PCB has two other chips on it.
They're both 74-series logic.
We can easily find datasheets for those and they should be sharing power/ground.
green is +5V
and either blue or yellow is GND.
(they both seem to be ground, at least as close as my multimeter can tell.

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A brief analysis and comparison of the CSS for Twitter's PWA vs Twitter's legacy desktop website. The difference is dramatic and I'll touch on some reasons why.

Legacy site *downloads* ~630 KB CSS per theme and writing direction.

6,769 rules
9,252 selectors
16.7k declarations
3,370 unique declarations
44 media queries
36 unique colors
50 unique background colors
46 unique font sizes
39 unique z-indices

https://t.co/qyl4Bt1i5x


PWA *incrementally generates* ~30 KB CSS that handles all themes and writing directions.

735 rules
740 selectors
757 declarations
730 unique declarations
0 media queries
11 unique colors
32 unique background colors
15 unique font sizes
7 unique z-indices

https://t.co/w7oNG5KUkJ


The legacy site's CSS is what happens when hundreds of people directly write CSS over many years. Specificity wars, redundancy, a house of cards that can't be fixed. The result is extremely inefficient and error-prone styling that punishes users and developers.

The PWA's CSS is generated on-demand by a JS framework that manages styles and outputs "atomic CSS". The framework can enforce strict constraints and perform optimisations, which is why the CSS is so much smaller and safer. Style conflicts and unbounded CSS growth are avoided.
What an amazing presentation! Loved how @ravidharamshi77 brilliantly started off with global macros & capital markets, and then gradually migrated to Indian equities, summing up his thesis for a bull market case!

@MadhusudanKela @VQIndia @sameervq

My key learnings: ⬇️⬇️⬇️


First, the BEAR case:

1. Bitcoin has surpassed all the bubbles of the last 45 years in extent that includes Gold, Nikkei, dotcom bubble.

2. Cyclically adjusted PE ratio for S&P 500 almost at 1929 (The Great Depression) peaks, at highest levels except the dotcom crisis in 2000.

3. World market cap to GDP ratio presently at 124% vs last 5 years average of 92% & last 10 years average of 85%.
US market cap to GDP nearing 200%.

4. Bitcoin (as an asset class) has moved to the 3rd place in terms of price gains in preceding 3 years before peak (900%); 1st was Tulip bubble in 17th century (rising 2200%).

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