Originally known as the Atari VCS—for Video Computer System—the machine's name was changed to "Atari 2600" (from the unit's Atari part number, CX2600) in 1982, after the release of the more advanced Atari 5200. The 2600 was typically bundled with two joystick controllers, a conjoined pair of paddle controllers, and a cartridge game—initially Combat and subsequently Pac-Man.
The Atari 2600 was wildly successful, and during the 1980s, "Atari" was a synonym for this model in mainstream media and, by extension, for video games in general, similar to "Nintendo" and "PlayStation" in the later 1980s and 1990s." (Wikipedia)
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Atari 2600 & VCS - Games (TOSEC-v2006-05-25)
Atari 2600 & VCS - Applications (TOSEC-v2006-05-25)
Atari 2600 & VCS - Audio (TOSEC-v2006-01-29)
Atari 2600 & VCS - Demos (TOSEC-v2006-05-25)
Atari 2600 & VCS - Educational (TOSEC-v2006-05-25)