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...ster-system.png|Image=device-sega-master-system.jpg|Year=1985|Manufacturer=Sega|Type=Video game console|CPU=Zilog Z80 @ 4 MHz|GPU=N/A|Sound CPU=Texas Instr ...e Master System II and later models did not have the card slot. The Master System also featured accessories such as a light gun and 3D glasses which were des

...o=logo-sega-sg1000.png|Image=device-sega-sg1000.jpg|Year=1983|Manufacturer=Sega|Type=Video game console|CPU=Zilog Z80 @ 3.58 MHz|GPU=Texas Instruments TMS9 ...ding the SC-3000 computer and the redesigned SG-1000 II, also known as the Mark II, released in 1984.