This article will explain the function of a bypass capacitor, when its appropriate to use them, and what values you should consider using.
The definition of a bypass capacitor can be found in the dictionary of electronics 'A capacitor employed to conduct an alternating current around a component or group of components. Often the AC is removed from an AC/DC mixture, the DC being free to pass through the bypassed component'. In practice, most digital circuits such as microcontroller circuits...