Scrolling text in LED dotmatrix display

Introduction:
Multiplexed displays are electronic displays where the entire display is not driven at one time. Instead, sub-units of the display (typically, rows or columns for a dot matrix display or individual characters for a character orientated display, occasionally individual display elements) are multiplexed, that is, driven one at a time, but the electronics and the persistence of vision combine to make the viewer believe the entire display is continuously active.

10x8 LED dot matrix display:
   Below figure illustrates the construction of a 10x8 LED dot matrix display.