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by partomniscient
751 days ago
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Its fundamentally an analog device. The concept of information being a 0 or 1 are simply one voltage level offset from one another. Its how we project the digital 'view' onto the computer and work with it. If the signal is not in the expected range of '0' and not in the expected range of '1' it should throw a hardware error and you'll end up with a BSOD (Blue Screen of Death) or equivalent. We feed it alternating current to start with. It can partially power up, the only reason it appears to be working or not is because of all the safeguards designed in - don't power up unless voltage is at least blah, and failsafe cutout refuse to power up because voltage is over say blah*1.05. There's a subset of expect Voltage ranges (eg. 3.3V)[1]. It's literally the first thing the computer does. POST - Power On, Self Test. [1] https://www.lifewire.com/power-supply-voltage-tolerances-262... |
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