A video game console is a boxlike standardized computing device tailored for video gaming that requires a monitor or television set as an output. Handheld controllers are commonly used as input devices. Video game consoles may use one or more storage media like hard disk drives, optical discs, and memory cards for content. They weigh between 2 and 9 pounds on average and their compact size allows them to be easily used in a variety of locations with an electrical outlet. Each are usually developed by a single business organization. Dedicated consoles can only play built-in games. Gaming consoles in general are also described as "dedicated" in distinction from the more versatile personal computer and other consumer electronics. Sanders Associates engineer Ralph H. Baer along with company employees Bill Harrison and Bill Rusch licensed their television gaming technology to contemporary major TV manufacturer Magnavox. This resulted in Magnavox Odyssey's 1972 release—the first commercially available video game console.