The document outlines the history of Nintendo's handheld game consoles from 1989 to 2009. It describes 7 consoles: the original 1989 Gameboy, the 1998 Gameboy Pocket and Gameboy Color, the 2001 Gameboy Advance, the 2003 Gameboy Advance SP, the 2004 Nintendo DS, the 2006 Nintendo DS Lite, and the 2009 Nintendo DSI. Each new console brought improvements like color screens, backlit screens, rechargeable batteries, and connectivity features while maintaining compatibility with earlier game cartridges.