This my first request to the piclist I have designed an optical tachometer using a stepper motor with a slotted wheel through which one can look and stobe rotating objects by adjusting the rpm of the motor. I can count the pulses to the stepper motor and measure the RPM with a 4 digit 8Hz frequency counter. This is all done with discrete IC's. It works great! However, this project screams for a PIC such as a 65F84. I'm sure this is an old question answered many times but I'll ask again. I need to design a 4 digit 7 segment LED or LCD display to read the stepper motor pulses at 8 Hz. We are only measuring RPM to 2000 RPM so the frequency is low. Some sample code for a frequency counter in this range would be helpful. Also, it would be nice to pulse the stepper motor chip with the PIC. Regards Wayne Galaugher Vancouver, Canada