From Sega Retro
The NES games (NES), originally released in Japan as the Family Computer (Famicom) is a video game console originally released in 1983 by Nintendo.
The Famicom was Nintendo's first cartridge-based home console, becoming the dominant home video game in Japan during the 1980s. In North America it was redesigned and released in 1985, and is typically credited as reviving the region's video game industry after the North American video game crash of 1983. At 62 million consoles have been sold worldwide, it is widely regarded as one of the most influential video game systems in history.
While different in aesthetics, both the NES and Famicom are identical from a technical perspective, and so on Sega Retro are treated as one system.
For information, see Nintendo Entertainment System.