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I wish the author had included the full ascii chart in 4 bits across / 4 bits down. You can mask a single bit to change case and that is super obvious that way.

The charts that simply show you the assignments in hex and octal obscure the elegance of the design.

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It was at some point looking at a chart like that where it also dawned on me where the control codes like ^D, ^H, ^[ etc came from

I was going to ask you to please explain as I didn't understand, but I am guessing you are talking about the same thing as this comment[1] right? That's super cool

https://news.ycombinator.com/item?id=41042570

Yes, though ^m, ^[ et al aren’t so much elegant as coincidental; but look at A and a, for example.

I found the chart I was looking for: https://en.wikipedia.org/wiki/ASCII#/media/File:USASCII_code...

The third and fourth columns of the table are only a single bit apart from each other. If you mentally swap the first two columns, you get a Gray code ordering of the most significant bits, which is pretty close to what you're looking for.

Found it: https://en.wikipedia.org/wiki/ASCII#/media/File:USASCII_code...

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