CadSoft EAGLE (Easily Applicable Graphical Layout Editor) also know as Eagle PCB is a powerful PCB Design Software ranging from creation of the schematic diagram, to design a printed circuit board with high resolution. CadSoft EAGLE has three modules: Module Schematic, Layout Editor, Autorouter. This program has a great library contains a number of standard electronic components and quite common as a microcontroller, this is relatively easier for you to design a PCB design.