The Intellivision is a home video game console released by Mattel Electronics in 1979. The name Intellivision is a portmanteau of “intelligent television”. Development of the console began in 1977, the same year as the introduction of its main competitor, the Atari 2600.[11] In 1984 Mattel sold the Intellivision business to a former Mattel Electronics executive and investors that would become INTV Corporation. Games development started in 1978 and continued until 1990 when the Intellivision was discontinued. From 1980 to 1983 over 3 million Intellivision units were sold
By Evan-Amos – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17891257