https://mobiledge.github.io/computing-from-the-ground-up/Recent content on Computing from the Ground UpHugoen-ushttps://mobiledge.github.io/computing-from-the-ground-up/docs/chapter-01-the-wire/Mon, 01 Jan 0001 00:00:00 +0000https://mobiledge.github.io/computing-from-the-ground-up/docs/chapter-01-the-wire/<h1 id="1-electricity-as-information-the-wire">1. Electricity as Information: The Wire<a class="anchor" href="#1-electricity-as-information-the-wire">#</a></h1> <p>Pick up a handful of sand. It runs through your fingers — coarse, dull, completely ordinary. There is nothing in it that hints at thought.</p> <p>And yet every computer you have ever used began as exactly this. Sand, melted and purified into silicon, sliced into thin wafers, and etched with billions of switches too small to see. The most intricate objects humanity has ever built are made, in the end, from one of the most common things on Earth.</p>https://mobiledge.github.io/computing-from-the-ground-up/docs/chapter-02-making-decisions/Mon, 01 Jan 0001 00:00:00 +0000https://mobiledge.github.io/computing-from-the-ground-up/docs/chapter-02-making-decisions/<h1 id="2-making-decisions-with-electricity-the-transistor">2. Making Decisions with Electricity: The Transistor<a class="anchor" href="#2-making-decisions-with-electricity-the-transistor">#</a></h1> <p>At the end of the last chapter, we landed on a single rule: a wire is either on (1) or off (0). That&rsquo;s the whole alphabet of a computer — two letters, nothing more. And we left ourselves with a question: what if we want one wire to <em>react</em> to what other wires are doing?</p> <p>To answer it, we need to look closer.</p>