I've been trying to learn about the different kinds of oscillators and I couldn't find any good information on it. (If anyone has any info/links, please post). So what's the difference between a plain crystal (http://www.futurlec.com/ICCrystalsMain.shtml) and a crystal oscillator (http://www.futurlec.com/ICCrystalsOscillators.shtml)? I am trying to build a 1 Hz pulse using a 32768 Hz crystal and a divider IC, but I have very little knowledge on the subject. A whole bunch of questions about crystals, RC oscillators and other oscillators and don't know where to find the answers. -- solarwind -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist