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*Con  Cost is about 10 bucks.  You may not have the 7 port bits available.
*Con  Cost is about 10 bucks.  You may not have the 7 port bits available.
The Hitachi HD44780 parallel interface is extremely common on character LCDs.
: ''(Many [[watch display]] are character LCDs)''
In addition to displaying letters and digits,
the Hitachi HD44780 supports a few "user-defined characters" that support simple graphics,
such as the [http://wilsonminesco.com/multitask/ battery-life icon documented by Garth Wilson].
* ''(Many [[watch display]] are character LCDs)''
* [https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller Wikipedia: Hitachi HD44780 LCD controller]
=== graphical LCD or OLED ===
=== graphical LCD or OLED ===

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