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ASCII

ASCII is a 7-bits American Standard Code for Information Interchange. Bit-0 was used in some systems. Now we always use full 8-bit bytes, sometimes called octets. This table makes use of even 9 bits
ASCII-9 © 2011, Klaas Van Buiten aka Patio of ClubFavolosa
The linked table may differ depending on your OS/browser

Another name I use is Patio, sometimes with a suffix like Patio4it and lately Olantagliano ( on Youtube )

UTF-8

When we were feeling the need to communicate with others we had not enough on 8 bits. A few examples:

   
Ogham, an old Irish script
An example of a 6-bit character set with several meanings are the hexagrams of the ancient Chinese I Ching

The 64 I Ching hexagrams