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/tech/ - Technology

"Technology reveals the active relation of man to nature" - Karl Marx
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What is 6 - 2?
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File: 1700255649437.gif (2.27 MB, 480x640, 1.gif)

 

recommend me resources for learning bit, hex, dec, ascii and stuff
1 post omitted.

File: 1700334775180-0.pdf (286.26 KB, 197x255, Numbers.pdf)

File: 1700334775180-1.pdf (570.65 KB, 197x255, Boolean Algebra.pdf)

I tried finding you something, it's surprisingly hard. These two look good. They are from here: https://home.csulb.edu/~hill/ee201/

>>22380
https://www.jemarch.net/poke

>>22399
thanks fren
some wikipedia references and articles are also good resources tho it's a shame such info is so spread out

>>22409
The actual topics to cover will largely depend on what you want to get out of it. Since you mentioned ASCII, I assume you are interested in the actual representations used by computers and not just the numeral systems in mathematics. I'm sure there are plenty of textbooks that cover these things but I can't recommend any because I learned these stuff by attending lectures in university.

I would cover at least these topics:
- Boolean algebra, maybe a little digital circuits
- Numeral systems (binary, octal, decimal, hexadecimal)
- Bitwise operations
- Number representations (BCD, sign-magnitude, one's complement, two's complement, floating point)
- Memory, endianness
- Arbitrary precision numbers (maybe?)
- Character encodings (ASCII, ISO/IEC 8859, Unicode)
- Maybe some simple image format like something from netpbm? Or some other example of how other things are represented in computers. 3D models, audio? idk

I'm sure I missed something, hopefully other anons will insult me for it,

>>22404
This looks sick, I wish I had an excuse to use it.


File: 1699824174702.png (52.81 KB, 639x724, thanks-for-inventing-javas….png)

 

EU should force websites to work without javascript tbh.
https://www.wired.com/2015/11/i-turned-off-javascript-for-a-whole-week-and-it-was-glorious/
9 posts omitted.

Remember when javascript only existed to make websites prettier?

>>22343
No, and my first browser was text based. JS has always been about adding functionality.

>>22343
I think you mean CSS

Not to defend js-fuckery but Math.max() and Math.min() make sense if you think of them as taking the sup/inf of the empty set

File: 1700025456468.jpg (19.81 KB, 640x640, ab67616d0000b27333a235259a….jpg)

>>22349
nah back then it was about crashing your browser


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I have a feeling that "AI alignment problems" were just made up to make programmers feel better about their inability to solve any real problem. Please tell me how wrong I am.
13 posts and 3 image replies omitted.

>>22325
AI is nowhere close to being real and there's much bigger issues. None of the stuff like AI art is anything approaching actual AI.

>>22303
>AI alignment problems
marketing term, nothing to do with programming

oh yeah dude ai is so so soooooo powerful right now we need to contain it pass laws only let a select few control it because it could kill us all im not blowing it out of proportion so you inflate our stocks no im actually sooo scared aha

File: 1700329216499.png (717.11 KB, 900x900, 1700322707416670.png)


"current text generation models carry with them the seeds for worldwide human extinction and we need to act accordingly" is a massively strong claim that is entirely hypothetical and carries zero evidence to back it up. It was more believable to say that nuclear weapons would cause a human extinction event and it still didn't happen. Why does anyone take these clowns seriously


File: 1653962740679.png (254.36 KB, 416x416, 1638387318493.png)

 

Remember to constantly randomize your MAC address.
https://github.com/datagod/gpsprobe
7 posts omitted.

randomizing your MAC address doesn't do shit unless you're concerned about the local network you're on. when packets get NAT'ed they don't preserve information about the MAC address on the local network because otherwise that would cause all sorts of problems. MAC addresses are only meaningful on a local network because iirc they're randomized and also dependent on the hardware you're using, so if every single MAC address of every device in the world was being sent around on the internet, there would be collisions all the time.

>>22249
>it's just nice to be noticed.
Deus Ex moment.

Android already does this by default.

sounds good if i'm on a labby, but why would i do it if i'm on desktop

>>22253
>Thinking any of this shit is going to protect you from the fbi.
If I was doing shit that I thought yhe feds would care about I would use TailsOS or something, but you probably can't even count on that.


File: 1653656820396.png (21.66 KB, 667x269, windows-antivirus-software.png)

 

Yeah I still using it, in fact anyone still kinda using it cuz we can't just abandon our normies facade.

Also is it true that from Windows 10 until onwards (Windows 11), you don't need install any third-party or additional antivirus?

I still can't move on into Linux. Cuz it's not even my laptop, but my parents.
5 posts and 2 image replies omitted.

Best advice is to run Windows in a Qubes OS virtual machine.

you should only use the built-in windows defender unless you like installing spyware that will make your computer run even slower

>>15089
although obviously the better option is simply not using windows at all

File: 1699464042518.jpeg (432.64 KB, 1072x1556, 23661f380e41cfde.jpeg)

I mean Windows has nothing exclusive anymore, so I don't get the point in trying it pretend it's still easy to use past Windows 7. NixOS with KDE is easier to teach to kids and old people than Windows 11 unless you want more flexibility than windows would ever non-trivially provide in the first place.

That said, ClamWin was great back when I used to use Windows.

>>22250
>NixOS
>kids will want to learn a programming language just to use the package manager and install programs
You had a point until you mentioned that meme OS.


File: 1654479855240.jpg (76.72 KB, 1200x675, FULOUqPXEAATsMO.jpg)

 

Canada’s favorite coffee chain was covertly data mining the shit out of people who just wanted cheap coffee, and they got outed by the government, then concluded tim hortons was basically being evil then was like “oh well can’t punish them".

>The Tim Hortons app used location data to infer where users lived, worked, and whether they were travelling. It generated an “event” every time users entered and left their homes, entered and exited their office, or travelled.
https://priv.gc.ca/en/opc-actions-and-decisions/investigations/investigations-into-businesses/2022/pipeda-2022-001/
1 post omitted.

>>15254
It streamlines the process. If you already have the app it has your payment info and so on and you can order stuff before you get there or something. It's really unnecessary and a sign of how strapped for time and productivity-maxing society has become.

>>15255
here's how to streamline the process: use cash

>>15254
it's a good feature, you can pre-order your food and only go there to pick it up

more broadly, it's crazy how inefficient the food sector is under capitalism. food is the archetypal economy of scale, cooking at home shouldn't be cheaper than eating outside, there shouldn't be a kitchen in every house

everything I eat tastes like shit because I'm not going to waste my time learning to cook, and I'm not going to waste money eating outside

>>22233
>more broadly, it's crazy how inefficient the food sector is under capitalism. food is the archetypal economy of scale, cooking at home shouldn't be cheaper than eating outside, there shouldn't be a kitchen in every house
It was the same in the USSR

>>22233
>cooking at home shouldn't be cheaper than eating outside, there shouldn't be a kitchen in every house
Those are two separate issues. Why it's more expensive to eat outside is because the restaurant has to pay salaries to cooks and waiters, rent, taxes, licensing fees, equipment, etc.

No, there shouldn't be a kitchen in every house. People should have a communal kitchen in the building, and then people from that building have to be paid to work in the communal kitchen. It shouldn't be a free-for-all, the communal kitchen should be run like a restaurant. People can have a kitchenette at home to warm up things, make tea, etc.


File: 1657928589500.jpg (59.96 KB, 500x500, __kirisame_marisa_and_patc….jpg)

 

Just found out about "invention clauses". In the US there are about 10 states which have 3 conditions: they own everything you name that was made on company time, using company equipment, or using trade secrets taught to you by the company.
Every other state does not include any conditions. They can claim everything you make, even if it's completely unrelated to your job. YouTube videos? Tutorials? Game streaming? A web comic? Literally anything. It's theirs.
They don't even have to make exemptions for collaborative work. They can take a portion of anything you contribute to if they want.
9 posts and 3 image replies omitted.

File: 1699454575490.png (247.95 KB, 932x924, Screenshot_20231108_084138.png)

*blood sucking noises*

>>22243
These laws completely ignores computer history. Workers walking out of Fairchild Semiconductor is how we got Intel, AMD and Zilog. Same with workers walking out of Motorola giving us MOS Technology. Meaning if the laws existed in the 1970s the PC would never have been invented in the USA as the military industrial complex had no interest in it and they employed all the engineers thus it would have had the intellectual property to the tech behind the PC and did nothing with it as DARPA didn't ask them to make one. Then you had Commodore and Atari swap a chunk of their engineers when Jack Tramiel bought Atari and when Commodore bought Amiga (that was engineers the left Atari prior) which would have been a IP nightmare.

>>15871
Ehh the USSR kind of did the Tetris guy dirty like that. Interesting story.

>>22245

>>22245
That was Gorbachev era, prior to that the CMEA didn't really care much about IP at that level where firms in the CMEA would reverse engineer from other firms in the CMEA with no worry along with from firms in the west.


File: 1654399434713-0.png (65.55 KB, 1235x849, abslogarithmic.png)

File: 1654399434713-1.png (61.1 KB, 1229x849, abslinear.png)

File: 1654399434713-2.png (63.61 KB, 1191x739, tether2usd.png)

 

An article from 2016 on how the Bitcoin blockchain was reaching its limit and being controlled by a tighter and tighter pool of speculators. Even more relevant with the rise and crash of tethercoins lately.
https://blog.plan99.net/the-resolution-of-the-bitcoin-experiment-dabb30201f7

File: 1654408923759.jpg (88.3 KB, 500x542, glindee.jpg)

woah cool af article anon
Do you know any similar ones for other projects (Monero)?

>>15226
also his blog is cool, there's a really neat post about bots and how the bot metrics are fake it wont stop me from saying social media is 80% bots tho
https://blog.plan99.net/fake-science-part-ii-bots-that-are-not-c66129e5e3f5

>>15228
No
Kute pic

>>15226
>plan9
can't take this guys seriously. get a better source

>>22198
why the fuck are you necrobumping? you're not even contributing, just spamming.


File: 1654726241869.jpg (997.97 KB, 1920x1080, 1654414597648.jpg)

 

What's a safe way to store lithium batteries in case they ever burst on fire?
1 post and 1 image reply omitted.

Neighbor installed a Powerwall, so I'm going to need to fireproof the fence.

also i read to keep them at 40% charge for the least wear on them, and keep them in a fridge lol (not freezer tho)

in it asshole

>lithium batteries
we don't even know how that shit works: https://wikenigma.org/content/chemistry/li_ion_batteries
<Although lithium ion batteries are considered as system of choice for variety of mobile and stationary applications, fundamental knowledge is alarmingly required to uncover the underlying principles controlling the basic processes that determine and dictate their function, operation, performance limitations as well as failure.

I just throw them into a random drawer and hope for the best.


File: 1698718162951.png (243.05 KB, 680x439, java-lisp-after-revolution.png)

 

>communist revolution happens in the 1990s (somehow)
>the tyranny of big tech is no more
>$$hillikkkon Valley execs are lined up and shot before they can ruin the world
>finally we can use the best tools for the job to increase our productive forces
>programmers form worker-owned soviets
>cybersyn.lisp
>Commissar James Gosling seizes direct control of all workers' soviets
>places Party representatives in charge
<comrade, lisp is an individualist bourgeois language used by kulak elites like Paul Graham
<the people's language is Java because everyone already knows it and it is designed to force programmers to do things the Java Way
<the object system of Java models the dictatorship of the proletariat via a Vanguard as a hierarchy of classes and objects which dissolve in the dialectical process of compilation to bytecode
<macro systems are anarchism and probably counterrevolutionary as well

was he right comr8s
2 posts omitted.

>>22118
I know Guy Steele definitely has some idea what he was talking about when he said this since he literally made scheme and was involved with Common Lisp standardization efforts but I really have no idea what he could have meant by this

>>22139
Just some guesses from the top of my head:
>garbage collection
<unheard of at the time in general purpose languages outside of lisp and smalltalk
>dynamic typing
<casting between sub- and superclasses
<before generics many data structures casted specific types into generic objects and vice-versa
>strong typing
<exceptions on invalid casts
>bytecode
<native compilation as a form of caching
>kitchen sink standard library
<see greenspun's tenth law

File: 1699007577690.jpg (156.58 KB, 978x987, IMG_20200726_002108.jpg)

>>22140
outing myself as someone who has never touched C++ because I value what remains of my sanity but I completely fucking forgot that it used to be the norm to not even have things like garbage collection and a big standard library

File: 1699008991861.png (113.97 KB, 270x270, ClipboardImage.png)

>java
no, after the revolution everything will be rewritten to either go, rust or c and you WILL enjoy it
every book, compiler and source code made for other programming languages WILL be outlawed and you WILL be hunted down as the counter-revolutionary scum you are if you try anything funny

>>22142
Forth programs will hate you, they spent years thinking that everything is a stack and routine in reverse polish notation. It is still used because it is one step above assembly.


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