General Purpose IO. GPIO devices, as a rule, have a set of IO ports, which are configured either for data input or output. GPIO devices can also support other types of bus protocols.
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General Packet Radio Service. GPRS is the technology of quick packet radio data communication used in GSM networks, which allows data transmission at higher speed if compared to standard GSM technology.
Its advantages are: high speed of data transmission, quick and stable connection. GPRS technology is used to connect to Internet, for WAP access and for SMS and MMS services.
Global Positioning System. GPS is the global satellite system for positioning current object location.
GPS consists of 24 artificial Earth satellites, a network of earth stations and user’s GPS receivers. It was developed by the US Department of Defense, but later it was allowed for residential use. Its main advantage is all-weather capability.
Global System for Mobile Communications. GSM is the most popular digital communication standard in the world.
It includes next functionalities: digitization, coding and transmission of voice, messages and other data; multichannel leveling and discontinuous transmission. The combination of these functions allows providing high quality and privacy of communication.
Graphical User Interface. System for user interaction with electronic device; it is based on presentation of all available to user system objects and functions in the form of screen graphical components (windows, icons, menus, buttons, lists, etc). At the same time in contrast to command-line interface, user has random access to all visible screen objects.