Handheld game console

A handheld game console is a portable electronic device for playing video games. Unlike console video games, the controls, screen and speakers are all part of a single unit. The first handheld game console with interchangeable cartridges was the Milton Bradley Microvision which was released in 1979. Since 1989, Nintendo has dominated the handheld market with the release of the Game Boy, and is often credited as popularizing the handheld console medium.