> hello everybody , i want to learn how can i solve quadratic equations > by using 16f84. i have 4 equations with 4 unknowns . By hand and put the solution in a RETLW table. Are you serious? Wanna use floating point math? Wouter -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.