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Re:ASCII is 50 years old by js2 on Tuesday June 18, 2013 @03:41PM (#5901518)
Turns out there's a reason for their placement:

- "The digits 0–9 were arranged so they correspond to values in binary prefixed with 011, making conversion with binary-coded decimal straightforward."

- "The letter "A" was placed in position 0x41 to match the draft of the corresponding British standard."

(Source: wikipedia.)

Re:ASCII is 50 years old by leviself on Tuesday June 18, 2013 @11:38PM (#5903629)
Another interesting bitwise trick: flip bit 5 to swap the case of an alphabetic letter.