• 2 Posts
  • 950 Comments
Joined 2 years ago
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Cake day: June 23rd, 2024

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  • we encourage Dashers to wait a few minutes

    How much do you pay them for waiting to compensate for the money they’d get delivering other items? (Your customers also have the app where they confirm delivery and tip so it’s not like Dashers will slack off for 3 minutes after handing the food over)

    In a small company, one could call this wishful thinking. In a large data-driven corporation, it’s a calculated lie.







  • Yes, scrolling moves the content. As if it’s being gripped by the bottom of the wheel I’m rotating with my finger from the top.

    Holding a toy tire

    Imagine a toy monster truck on a sheet of paper. Push the wheels forward, page moves backward.

    Inverse scrolling is like a high-heeled rubber shoe attached to the tip of my finger advancing the page. There’s some logic to it but that’s not what a wheel is like unless it’s an Apple mouse’s touch wheel. But they can’t be trusted to design a mouse: one had a circular cross-section, another charged from the bottom.

    The big question is: which is natural? Fortunately, mice exist in nature so there’s a way to find out. Hold one tightly like this, release the front hand… Which way will the cloth move?
    Holding a lab rat



  • Yes, SCART’s features are fucking clever but it got unwieldy thick because by the spec, each cable had to be separately shielded. Even the widescreen control signal that’s mostly DC. Why not use differential pairs to reduce thickness and cost, modulate the audio and control signals together for fewer wires, and add a 5V rail to accomodate little demodulating converters (if you want separate audio devices) and eventually power PVR/tuner dongles? Most people use TV speakers anyway, that’s the whole point of a single connector of an A/V standard. Not to mention how easily it fell out, almost every other connector holds better, and the ports are hard to feel on the back of the TV. If it’s a giant 32" one nearly flush against a wall, good luck lining it up whenever you yank a controller cord and the vibration makes it fall off! And while a small STB can hang off RCA jacks, SCART sometimes disconnects by the weight of the cable itself. Or it gets angled so the video passthrough stops working and you only find later your VCR recorded just audio.

    I think it’s because of these problems, the biggest one emerged: SCART never became a worldwide standard. Nowadays, TVs are made for a world market, so even North America finally enjoys PAL-compatible sets (while most Europe-market ones and many VCRs were 3-standard since 1990), but unfortunately SCART is basically gone, not to mention very few capture cards were made with real RGB input because RCA component is stupid (why 3 connectors when no consumer ever mixes color channels? (mixing requires external sync, which is only on pro equipment and an extra cable anyway) why not decide between YPbPr and RGB before writing the standard?)

    clever Frenchies

    Don’t say that. SCART is awesome despite its flaws but the same people also cursed half of Europe with fucking SECAM. Imagine needing a 64µs, 5MHz-bandwidth delay line just to decode color at all (unlike NTSC/PAL’s QAM, SECAM’s FM allows just a single chroma channel per line, alternatingly carrying U and V axes), and a frequency-modulation+pre-emphasis system in every console/camera/DVD player to encode it, plus no color killer option (disabling the colorburst) for sharp B/W like on the Apple II!

    In PAL, information between subsequent lines was used too but only to correct recovered carrier phase between colorbursts, which was optional (cheaper sets kept NTSC-style hue controls) and could be handled by a locked oscillator rather than a whole-ass delay line (before shift registers (digital sequential-access-memory), every color set had fucking piezo transducers and physical waves travelling through precisely cut quartz, WTF?!).



  • The anode current for such a small screen area is pretty low, I’d guess tens of μA. The flyback also provides a few hundred V to 1 kV for various grids like focus and brightness of the electron gun, which take similar current. Since they all use voltages adjustable in different ranges, a single series of resistors and potentiometers is employed as an adjustable potential divider, consuming usually less than 1 mA (1 W).

    With such small sets (or ancient vacuum tube ones), the power draw of the electronics driving the deflection coils is also considerable. I’d guess about 2 W for the CRT heater, 1 W for the HV, 1 W for the sync, amplification and deflection.