The SG-1000 (エスジー・セン, Esujī Sen?), which stands for Sega Game 1000, was a cartridge-based video game console manufactured by Sega. This system marked Sega's first entry into the home video game hardware business, and while the system was not popular, it provided the basis for the more successful Sega Master System.
Read more about SG-1000: History, SG-1000 II, SC-3000, Sega Mark III, Specifications, Emulation, List of SG-1000/SC-3000 Series Games