Numbers 0-99 and letters A-Z displayed as though on a split-flap (Solari board) train/airport display or a digit-flip clock. This type of display is also seen on popular phones running the Android operating system. Transparent background .png files are included in white and black.
The font used is Coolvetica- which is a free font for personal and commercial use, and is available here: http://desktoppub.about.com/library/fonts/tx/uc_coolvetica.htm
Other fonts that work well are Helvetica, Arial, Myriad Pro