Since 1983, when it launched the Nintendo Entertainment System , Nintendo has sold more than 4.7 billion video games and more than 740 million hardware units globally, including Nintendo Switch and the Nintendo 3DS family of systems, as well as the Game Boy , Game Boy Advance, Nintendo DS family of systems, Super NES , Nintendo 64 , Nintendo GameCube , Wii and Wii U systems. Hands-on experience developing network socket code using TCP/IP and UDP, including socket APIs, connection management, packet handling, timeouts, retries, and error handling.