Arduino:

Font Stuff:

http://heim.ifi.uio.no/haakoh/avr/

https://code.google.com/p/ht1632c/source/browse/?r=f32a1046dbffe7417cc068d186b0bd3c17a28271

(For larger displays): https://code.google.com/p/ht1632c/source/browse/font.h

http://www.industrologic.com/mt1char.gif

CharliePlexing

http://playground.arduino.cc/code/charlieplex