For married dependents who are under the age of 65 and not blind, you generally must file a federal income tax return if your unearned income was more than $950; if your earned income was over $5,950; or if your gross income was at least $5 and your spouse files a separate return and itemizes deductions.
The Atari 2600 came out in 1977. Originally known as the VCS or  Video Computer System, it was renamed to it's catalog number  (CX-2600) in 1982.
Today, the Pong Game is considered to be the game which started the video games industry, as it proved that the video games market can produce significant revenues. Nolan Bushnell founded Atari at 1972 in order to create games and ideas and license them to other companies for mass production.