Atlas Dictionary English, Arabic SD3900i Special After the huge success that was achieved after releasing Atlas specialized dictionaries, we present Atlas "SD3900i" that contains besides the encyclopedic dictionary many specialized dictionaries such as: (Medical, Commercial, Law, Political, Military, Sports, Scientific, Civil Engineering, Agricultural Engineering, Electrical Engineering, Chemical Engineering, Computer, IT and Internet). In order to support the device technologically; it is equipped with an advanced search engine that enables the user to know the meaning of any word in any specific field. Furthermore, it contains 12 languages dialogue that grants the user the chance to communicate with others while traveling worldwide.