The average width of a human hair is around 50 to 120 micrometers (µm), or anywhere between three and five thousandths of an inch. Now let’s take five thousandths (0.005) of an inch and divide it by 63,500, which equals 2 nanometers – that is the transistor size inside the A20 Pro chip powering iPhone […]

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The Logic Board In a previous article, I mentioned that I had a Quadra 605 logic board with a bad microprocessor. The 605 uses a MC68LC040RC25, a 25 MHz 68040 without a floating-point unit (FPU). It was perfectly adequate for most home users at the time, but the lack of an FPU and relatively modest […]

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