- http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010053
- http://www.voti.nl/pic/index.html
- http://ww1.microchip.com/downloads/en/DeviceDoc/40051D.pdf
- http://ww1.microchip.com/downloads/en/devicedoc/41202C.pdf
- http://www.viddata.com/rs232_interface.htm
- http://www.best-microcontroller-projects.com/led-dot-matrix-display.html
- http://www.ic-prog.com/
- PIC simulator http://www.oshonsoft.com/downloads.html > PIC Simulator IDE