Learn about Atmega 328 pin mapping

As we know, this Development of Integrated Crops Management System (DICM system) is using Atmega 328 as the microprocessor for this system. Why we choose this Atmega 328 as microprocessor in this DICM system compare to other microprocessor such as PIC16F873?. The comparison between Atmega 328 and PIC16F873 are shown in the table bellow. 

Comparison between Atmega 328 and PIC16F873

                                               Atmega 328                               PIC16F873

                                                * 28 pins                                     * 28 pins

                                                * 8 bit processor                         * 8 bit processor 

                                                * 10 bit ADC                              * 8 bit ADC

                                                * Resolution                                * Resolution

                                                      : 5 / 2^{10                                                    :}5 / 2⁸

                                                                        : 4.88mV                                     : 19.53mV

^{*From comparison between both microprocessor, Atmega 328 was chosen. It is because this microprocessor can detect any small range of changes with resolution 4.88mV. By using PIC16F873 microprocessor, it will detect at the changes around 19.53mV only compare with Atmega 328 which is 4.88mV.  Figure bellow shows the Atmega 328 pin mapping.} 

From the figure above, the Atmega 328 microprocessor have 28 pins, 5 volt and ground pins (basic), 6 analog pins and 14 digital pins. The selection of input and out pins will find out to make this DICM system.