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<h1>The Domino Clock</h1>
<p>
Sometime around 1996, when I was working for CompuServe, I saw a lovely demonstration of an
electromechanical watch that used a sort of domino face to tell the time. I liked it so much that
when I was looking for a toy project for my first Java Applet, I decided to implement the
algorithm of the watch.
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<p>
25 years later, I found the source code buried somewhere in an old
CD. I decided to try an re-implement the logic in Javascript, and to
experiment with a
<a href="https://developer.mozilla.org/en-US/docs/Web/Web_Components">Web Component</a>,
using the <a href="https://lit.dev">lit-html library</a>. This is the result.
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<p>
It might seem a bit silly to have implemented the seconds face when the minutes face has a
resolution of only five minutes, but it allows you to watch the clock in operation and learn what
each symbol means: an empty face is 0 (12) and all four pips visible is 11 (or 55
minutes/seconds).
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<domino-clock></domino-clock>
<p>
The source code, both for this project and for the Java original,
<a href="https://git.elfsternberg.com/elf/dominoclock"
>are available at my personal Git repository</a
>
at <a href="https://elfsternberg.com">ElfSternberg.com</a>.
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<script type="module" src="./src/index.ts"></script>
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