• 0 Posts
  • 109 Comments
Joined 6 个月前
cake
Cake day: 2025年6月6日

help-circle















  • Okay, I’m starting to think this article doesn’t really know what it’s talking about…

    For most of modern computing history, however, analog technology has been written off as an impractical alternative to digital processors. This is because analog systems rely on continuous physical signals to process information — for example, a voltage or electric current. These are much more difficult to control precisely than the two stable states (1 and 0) that digital computers have to work with.

    1 and 0 are in fact representative of voltages in digital computers. Typically, on a standard IBM PC, you have 3.3V, 5V and 12V, also negative voltages of these levels, and a 0 will be a representation of zero volts while a 1 will be one of those specified voltages. When you look at the actual voltage waveforms, it isn’t really digital but analogue, with a transient wave as the voltage changes from 0 to 1 and vice versa. It’s not really a solid square step, but a slope that passes a pickup or dropoff before reaching the nominal voltage level. So a digital computer is basically the same as how they’re describing an analogue computer.

    I’m sure there is something different and novel about this study, but the article doesn’t seem to have a clue what that is.




  • Microsoft already trialled this in Scotland, except it was powered by prototype tidal which was also being tested at that site.

    One of the other things Microsoft tested was running the server room in a pure nitrogen atmosphere. Apparently this was very beneficial as it reduced the failure rate of components - you can’t have a spark without oxygen. That was actually the main advantage taken away from the test, with a view to maybe adopting that for datacentres on land (I doubt this though, the level of protection you’d need for workers makes it cost-prohibitive).

    Cold is better managed by being somewhere cold - which is why they’re all busy building tons of datacentres in Nordic countries.