Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel. To link a standard 16×2 LCD directly with the microcontroller, for instance ...

Padow] put together an Arduino Uno, SD card, four line character LCD, and PS/2 keyboard ... It’s hard for us to watch this and not think back to an orange or green monochrome display.

We might think that an AVR microcontroller – e.g. the ATMega328p adopted by the Arduino UNO boards – has the sufficient number of pins to manage an alphanumeric LCD. In a complex industrial machine ...