8valves wrote: > Thanks for all the great info guys. Yeah I will go the mathematical > route. I > did figure it out in advance but wanted to know if anyone else used > the > table. Using the table would yield extremely fast results...especially > needed when the engine is running at high RPM. If you need faster response at higher engine speed, then it sounds like this is a control problem, not a human display problem. Once again, do you really need speed? Can you arrange the rest of the algorithm to work with period? What exactly are you trying to do with the speed value? ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist