Nokia 5110 LCD is a 84×48 pixels matrix LCD. It is low-cost, monochrome LCD which has become popular for 8-bit AVR/PIC projects. It has an SPI interface. Search Google for ‘Nokia 5510 LCD’ and you will find lots of resources.
It is also compatible with Nokia 3110 with the code being the same for Nokia 3110 and 5110. So there is the ready-made Arduino library for this LCD!
This display is ideal for our IBridge 4×4 keyboard.