- ASCII; nice thing: upper case and lower case differ just 1 bit. - [KOI8-R](https://en.wikipedia.org/wiki/KOI8-R); nice thing: take cyrillic text, set first bit to 0 and you have a transliteration in Latin alphabet. - [Chinese telegraph](https://en.wikipedia.org/wiki/Chinese_telegraph_code); totally different but still the same.