Question

What kind of images can the Nokia 5110 GDM display?

(a) Colored Image

(b) Grayscale Image

(c) Binary Image

(d) Inverted Image

The question was asked by my school principal while I was bunking the class.

This interesting question is from OLED Display Module topic in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino

Answer 1

Right option is (c) Binary Image

To explain I would say: Since the pixels of the Nokia 5110 Graphical Display Module have only two states, that are either ON or OFF, it is able to only display binary bitmap images. So while feeding the image to the module, the image must be converted to binary with the help of preprocessing software.