Made in the 1960s by an American named David Rosen. The company started off as a successful photo boot company, bought out a Japanese jukebox company, and started making games in the 1970s. The company began making consoles in the 1980s, the most successful being the SEGA Genesis
(1988), the SEGA Saturn
(the Japanese version of course)(1994), and the SEGA Dreamcast
(1998). After the surprising failure of the SEGA Dreamcast to pull the company out of its half-decade of debt from releasing poor quality consoles before the SEGA Saturn, SEGA sold itself out to Nintendo, Sony, and Microsoft.
Once I was a SEGA fan, now I do my gaming on my trusty old PC.