Changes

*Sega Discrete Logic (1973–19801973-1980)**Sega Fonz hardware (1976-1977)*Sega Blockade hardware (1976–19771976-1978)*Sega VIC Dual (1977–19811977-1981)*Galaxian-based hardware (1980-1982)*Sega KO Punch (1981)*Sega G80 (1981-1983)*VCO Object (1981–19821981-1982)*Sega G80 Zaxxon hardware (1981–19831982-1984)*Sega Z80 System 1 (1981–19861982-1987)*Sega Zaxxon LaserDisc hardware (1982–19841983-1991)*Sega System 1 Appoooh hardware (1983–19871984-1986)*Sega LaserDisc SG-1000-based arcade hardware (1983–19911984-1985)*Kyugo (九娯) (19841985-1986)*Sega System E Hang-On hardware (1985–19881985-1991)*Sega System 2 (1985–1988)*Sega Space Harrier (1985–19921985-1988)*Sega System 16 (1985–20081985-2008)**Pre-System 16(1985-1987)**Sega System 16A(1986-1988)**Sega System 16B (19861987-1995)**System 16C (2008)*Sega System 16CE (1985-1989)*Sega Gigas hardware (1986-1988)*Sega OutRun hardware (1986-1991)*Sharp Shooter (1986)*Space Position (1986–19911986)*Sega X Board (1987–19901987-1992)*Sega System 24 (1988-1994)*Sega Y Board (1988–19911988-1991)*Sega Mega-Tech System (1988–19921989-1992)*Sega System 24 18 (1988–19941989-1992)*Sega System 18 C (1989–19921989-1996)*Sega *System C (1989-1990)*Sega *System C2 (1989–19951990-1995)*Sega System 32 (1990–19951990-1995)*Sega *System 32 (1990-1995)**System Multi 32 (1992–19941992-1994)*Mega Play (1991-?)*Sega Model 1 (1992–19941992-1995)*Sega Mega-Play Model 2 (1993-1999)*Sega *Model 2 (1993–19941993-1994)*Sega *Model 2A-CRX (1994–19981994-1999)*Sega *Model 2B-CRX (1994–19981995-1997)*Sega ST*Model 2C-V CRX (1995–20001996-1998)*WhiteStar Sega Titan Video (1995–20041994-2001)*Sega Model 2C3 (1996-CRX (1996–19981999)*Sega Model 3 *Step 1.0 (1996–19971996-1997)*Sega Model 3 *Step 1.5 (1996–19981996-1998)*Sega Model 3 *Step 2.0 (1997–19981997-1999)*Sega Model 3 *Step 2.1 (1998–19991998-1999)*Sega NAOMI (1998–20091998-2009)*Sega *NAOMI (1998-2009)**NAOMI GD-ROM (1999-2006)**NAOMI Multiboard (1999-2001)**NAOMI Satellite Terminal (1999-2005)*Sega Hikaru (光) (1999–20021999-2001)*Sega NAOMI 2 (2001–20062000-2006)**NAOMI 2 (2000-2003)**NAOMI 2 GD-ROM (2001-2004)**NAOMI 2 Satellite Terminal (2002-2006)*Triforce (2002–20062002-2007)*Sega Chihiro (千尋) (2002–20082002-2007)**Chihiro (2002-2005)**Chihiro Sattelite Terminal (2004-2007)*Sega System SP (2004-2014)*Sega Lindbergh (2005-2010)**Lindbergh Yellow (2005-2010)**Lindbergh Red (2007-2009)**Lindbergh Red EX (2008-2010)**Lindbergh Blue (2005–20132008-2010)**Lindbergh Silver (2010)*Sega Europa-R (2008–20112008-2010)*Sega RingWide RingEdge (2009–20122009-2018)*Sega RingEdge RingWide (2009–2009-2014)*Sega RingEdge 2 (2011–2011-2018)*Sega Nu (2013–2013-2016)*Sega Nu 2 (2016-2017)