egsmi

11 ms·

61.
by egsmi 6y ago
We're going to have to agree to disagree on this one. But let me give you all an example. Wolfram Documentation on Mathematica is excellent in my humble opinion. Here is a function I use very often, convolve. https://refer
62.
by egsmi 6y ago
There are good reasons to hide the implementation details in documentation. The primary being it’s easier to keep the documentation up to date, our primary topic here. Many languages even publish class interfaces but not necessarily imple
63.
by egsmi 6y ago
A shovel can be a surprisingly effective weapon if properly employed. https://en.m.wikipedia.org/wiki/Anti-tank_trench
64.
by egsmi 6y ago
Don’t get me wrong, I think what those guys are doing is cool, but it’s 130nm, a fairly small die, and it’s not a fully custom ASIC. That’s how they’re getting the cost down to under $100K. “Degree of Customization: Only what is available
65.
by egsmi 6y ago
Also there’s this argument https://en.m.wikipedia.org/wiki/Accessory_to_War
66.
by egsmi 6y ago
That's interesting. Can you point to an example? Is it a resolution problem?
67.
by egsmi 6y ago
Here an example. I’m on the freeway in my Tesla and instead of staying behind a car, at a safe following distance as predicted, I change lanes and speed past. Was it because, 1) the car was doing something I perceived as dangerous and I m
68.
by egsmi 6y ago
I was super excited about the idea of AutoCAD being listed as normally us non-web engineers are left out of “tech” but there are some screwy things with these rankings. For example, many of the CAD postings are like this one, https:/
69.
by egsmi 6y ago
I think Bjarne Stroustrup put it best. “There are only two kinds of languages: the ones people complain about and the ones nobody uses.” The C++ Programming Language https://www.goodreads.com/quotes/226225-there-are-on
70.
by egsmi 6y ago
Sounds like what Bay Area buyers are doing to Hawaii. And that’s not money laundering. Just saying other explanations are certainly possible. https://www.sfgate.com/hawaii/article/Hawaii-real-estate-mar...
71.
by egsmi 6y ago
For me there are two basic reasons: 1) everyone I know is on iMessage, 2) iMessage does everything I require of a messaging app. Honest question and not trying to be hostile, why should I prefer telegram? What am I missing?
72.
by egsmi 6y ago
I'm a little slow today. There was an article about a month ago on the Sac State 8008 and it had a link to the user manual which contained a high level schematic of that computer. Sync goes straight into a TTL inverter. So ya, TTL, of
73.
by egsmi 6y ago
Thanks for the information. It so cool that you can just examine the die and know the answer. There are definitely trade offs to consider so I can understand why the Intel engineers took that route. On the one hand, one gets a very negative
74.
by egsmi 6y ago
Interesting, I thought TTL didn’t like voltages that were too negative but I’m definitely not too great on the historical stuff. This data sheet for 7400 logic, which admittedly only goes back to 1983, doesn’t like inputs below -1.5V That
75.
by egsmi 6y ago
Thanks! The pin out on page 2 has no ground, so what are they pulling down to? That’s my question. I can imagine a couple of ways to do make the TTL levels so I’m curious which way it was actually done.
76.
by egsmi 6y ago
It just dawned on me that you could use the Vol=Vdd-Vt property of the inverter to level shift up the IO output closer to ground. Especially if one did a circuit that did Vol=Vdd-2Vt one could get a low output that’s pretty close to ground
77.
by egsmi 6y ago
I love these posts and I could probably ask a thousand questions. I'll constrain myself to just... a couple. :) Does the 8008 get ground internally or does the IO just drive Vdd (-9V) as the low level? The data sheet you linked to ha
78.
by egsmi 6y ago
It's also very common in switching power supplies as it allows N-type devices to be used in the high side improving efficiency for "high" output current supplies. Here is an excellent summary of the various techniques. http
79.
by egsmi 6y ago
Neither does Japan and North Korea but this still happened. https://en.wikipedia.org/wiki/2017_North_Korean_missile_test...
80.
by egsmi 6y ago
That has happened to me more than once too. I usually take the rematch because I can often win the second game too, I’ll guess 15% of the time. Almost always the better player is trying an opening trap which is dubious but will cause me to
81.
by egsmi 6y ago
> There is no such thing as a pure zero resistor in this Universe. Looks like unnouinceput is just in the wrong jurisdiction. :)
82.
by egsmi 6y ago
No. It's actually a zero (1) ohm resistor. You can buy one too. https://www.digikey.com/en/products/detail/koa-speer-electro... (1) Please read the terms of the data sheet carefully and consult your l
83.
by egsmi 6y ago
Interesting. I've been putting 0 ohm resistors in my schematics for years. I wonder what took these guys so long. :)
84.
by egsmi 6y ago
JTAG is very useful to test that this particular iPhone was manufactured correctly, so Apple doesn’t completely disable it. That said, Apple does have a hardware disable that removes the ability to access registers and memory via JTAG. On
85.
by egsmi 6y ago
I thought upper-middle-class families just went to private school.
86.
by egsmi 6y ago
Do you have any reference for that? I am very curious how the "width" of an Apple cpu was measured. One of the few good measurements I know of was done here and it's a bit inconclusive as the result is very particular. htt
87.
by egsmi 6y ago
> It's torturous to claim that phones have a "primary commercial purpose of forcing people to look at advertising". That's true. I also read a lot comments on hacker news.
88.
by egsmi 6y ago
That would be impressive, unfortunately it is not correct. You can see this article, and the comments, for more information. https://news.ycombinator.com/item?id=24618031
89.
by egsmi 6y ago
Your comment got me thinking, Apple probably was already buying large blocks of pentest time, and the comments in the thread make it seem like these were obvious flaws. Is that right? If we assume Apple already had a contracted pentest fi
90.
by egsmi 6y ago
Does Figure 15 have a unit error? A 4G and 5G link can’t support 2500Km legs, right?

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