The HD44780 is an LCD controller made by Hitachi since the 1980s.
If you use any device with an LCD consisting of discrete characters, the chances are very high that it's using this controller, or a clone of it.
- "HD44780 / HD44780A" Hitachi, Hitachi LCD Controller/Driver LSI Data Book #U74, Aug 1989, pp. 98—155
Hitachi: HD6303X | HD44780