The release of the Mega Drive and Turbografix-16 consoles in 1989 meant that Nintendo too had to come up with a 16-bit machine to stay in the game. It did not release the SNES in Japan until November 1990, known there as the Super Famicom, in the US in September 1991 and in the UK in April 1992, simply because the NES was doing well and new games were still being released for it. When it finally hit the market though, it proved to be a powerful and impressive competitor to Sega's Mega Drive and NEC's Turbografix-16.
The SNES had a much slower processor then the Mega Drive, but it really excelled when it came to its graphics processor. It could produce 32K colors, 256 of which could be displayed on screen at the same time, and had special hardware modes that allowed for effects such as scaling, rotating and transparency. This was the SNES's strong point.