86 l Chapter 5 Curtis, K.E., 2006. Embedded Multitasking, Newnes, Burlinghton, MA. Keith knows multitasking and what it takes to create small and efficient embedded control applications. Links l l http://www.aopa.org This is the web site of the Aircraft Owners and Pilot Association. Feel free to browse through the web site and access the many magazines and free services offered by the association. You will find a lot of useful and interesting information in here. http://www.niell.org/nixie_clock/Nixieclock.html A PIC-based clock with a retro style, using glowing Nixie tubes.