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Introduction

Every microcontroller needs a clock signal to operate. Internally to the device the clock signal controls the speed of operation of the device and each passing clock cycle synchronises the operation of the various internal hardware blocks. There are several decisions to be made concerning clocking your chip and before downloading a program to a PICmicro device you need to understand the choices and make some decisions. In this section we will address the issue of clocking and the choices you can make.