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abhibeckert

@ abhibeckert @lemmy.world

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Joined
3 yr. ago

  • Why a kilobyte is 1000 and not 1024 bytes

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  • they see 20 minutes, they’re scared off

    I'm not "scared off". I'm on Lemmy to have discussions, not to read articles. If I want to read articles I'll get a magazine.

  • Why a kilobyte is 1000 and not 1024 bytes

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  • The "chunk" is often 32,768 bits these days and it never matches the actual size of the drive.

    A 120 GB drive might actually be closer to 180 GB when it's brand new (if it's a good drive - cheap ones might be more like 130 GB)... and will get smaller as the drive wears out with normal use. I once had a HDD go from 500 GB down to about 50 GB before I stopped using it - it was a work computer and only used for email so 50 GB was when it actually started running out of space.

    HDD / SSD sellers are often accused of being stingy - but the reality is they're selling a bigger drive than what you're told you're getting.

  • Why a kilobyte is 1000 and not 1024 bytes

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  • 1024 is not the standard. The standard term for 1024 is "kibi" or "Ki" and the standard term for 1000 is "kilo" and has been since the year 1795.

    There was a convention to use kilo for 1024 in the early days of computing since the "kibi" term didn't exist until 1998 (and took a while to become commonly used) — but that convention was always recognised as an incorrect use of the term. People just didn't care much especially since kilobytes were commonly rounded anyway. A 30,424 byte file is 29.7109375 kibibytes or 30.424 kilobytes... both will likely be rounded to 30 either way, so who cares if it's slightly wrong? Just use bytes if you need to know the exact size.

    Also - hard drives, floppy disks, etc have always referred to their size in base 1000 numbers so if you were working with 30KB in the early days of computers it was very rarely RAM. A PDP-11 computer, for example, might have only had 8196 bytes of RAM (that's 8 kibibytes).

    There are some places where the convention is still used and it can be pretty misleading as you work with larger numbers. For example 128 gigs equals 128,000,000,000 bytes (if using the correct 1000 unit) or 137,438,953,472 bytes (if kilo/mega/giga = 1024).

    The "wrong" convention is commonly still used for RAM chips. So a 128GB RAM chip is significantly larger than a 128GB SSD.

  • Why a kilobyte is 1000 and not 1024 bytes

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  • "Kilo" means 1000 under the official International System of Units.

    With some computer hardware, it's more convenient to use 1024 for a kilobyte and in the early days nobody really cared that it was slightly wrong. It has to do with the way memory is physically laid out in a memory chip.

    These days, people do care and the correct term for 1024 is "Kibi" (kilo-binary). For example Kibibyte. There's also Gibi, Tebi, Exbi, etc.

    It's mostly CPUs that use 1024 - and also RAM because it't tightly coupled to the CPU. The internet, hard drives, etc, usually use 1000 because they don't have any reason to use a weird numbering system.

  • EV Batteries Are Dangerous to Repair. Here’s Why Mechanics Are Doing So Anyway

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  • It's up and running for the Powerwall, on some grids anyway (it works in my state - but depends on having an agreement with the grid).

    The thing is there needs to be coordination between your battery and the grid - you don't to drain your battery every night, they only last about 4,000 cycles.

    If every home in the state had a Powerwall, then maybe it could help provide baseload power but the reality right now is all it can do is help with temporary disruptions, for example keeping the grid up when a cloud passes over a major solar farm.

    They're in the planning stages of doing Vehicle to Grid or V2G power. Right now though, it's just for standalone batteries. This isn't just Tesla by the way - when it comes it'll likely be for most EVs.

  • Threads is blocking servers on the Fediverse. Here's how we unblocked ourselves. | Soapbox

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  • Meta has well over two billion users. The vast majority of them are ordinary people who should be welcomed onto the fediverse. Yes, any network that big has problematic people... but they can be dealt with.

  • Why AI is a disaster for the climate

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  • Um... doesn't ChatGPT run on Azure? A world leader in sustainability that has been carbon neutral for over a decade?

  • World’s first off-road solar car ‘Stella Terra’ succeeds in cruising from Morocco to the Sahara

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  • Light weight panels tend to produce less power. The best ones are opaque and have a thick glass layer on both sides of the circuitry - so they're not super light. Also the glass would need to be strong enough to handle rocks/etc as well as provide structural support in a crash (even if it's just with the initial impact and then shatters similar to a car windscreen).

    They could theoretically be light however in reality heavy panels might be a better choice.

    But yeah I agree you're on the money with protecting the car. This could make a big difference to the usable life of the battery by keeping it closer to the optimum charge level especially with a normal daily suburban to city commute.

  • What are your opinions on in-person conferences?

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  • For me the optimal conference is one where your accommodation is included in the ticket price and in the same building as the conference. Book out an entire resort or cruise ship and encourage people to socialise late at night and/or early in the morning outside of the main conference track.

    And with the actual talks, spread them out so there's plenty of time for attendees to have discussions in between talks.

  • Toyota boasts new battery technology with 745-mile range and 10-minute charging time — here’s how it may impact mass EV adoption

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  • Nah that's bullshit.

    Interstate powerlines are like half an inch and they carry several orders of magnitude more power than you'd ever need to quickly charge a car battery.

    EV charge cables are thick because a lot of them contain several wires which all need to be electrically shielded from each other (which is generally done by maintaining a physical gap between the actual wires). Part of that is just because we have multiple generations of EV charge technology and the new standards are backwards compatible with the old standards... so a lot of the wires in the cable are not even used when you charge your EV.

  • Chrome, Firefox and other browsers affected by critical WebP vulnerability

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  • They took the open source WebKit to develop Chrome and Chromium.

    How did that turn out?

    Perfectly? Web browsers are way better now than they ever have been.

    Google wants to own images. Doesn’t matter if they made the licensing whatever. They make webp. They have a personal vested interest in control.

    WebP is a little better than PNG/JPEG and way better than GIF. That's all that really matters.

    You trust Google???

    Hell no. I reluctantly watch a bit of content that's exclusively available on YouTube. Don't use anything else of theirs and I'd drop YouTube in a heartbeat if I could find that content elsewhere.

  • It's official: Smartphones will need to have replaceable batteries by 2027

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  • The EU almost forced the phone industry to start using standardised/interchangeable batteries.

    If the batteries cost as much as a new phone, they'll reconsider that decision.