Using the Nokia 5110 LCD with the fewest system resources

These Nokia 5110 displays are mostly reclaimed ones for mobile phones.

They are fine for some projects and one of the few displays that are readable in direct sunlight.

They are in my experience of very questionable reliability and if your application does not require the display to be read in direct sunlight I would use something like on of the SSD1306 OLEDs, they are 4 wire too.