^ Starting with Microsoft's fiscal quarter ending June 2014 (Q4), the company stopped divulging individual platform sales in their fiscal reports.[24][25] Microsoft stated it will shift focus to the amount of active users on Xbox Live starting in late 2015.[26] Microsoft CEO Satya Nadella unveiled at a December 3, 2014 shareholder presentation that 10 million units were sold.[27] Third-party estimates suggest sales reached approximately 25-30 million worldwide by late 2016.[28]
The first video games appeared in the 1960s.[20] They were played on massive computers connected to vector displays, not analog televisions. Ralph H. Baer conceived the idea of a home video game in 1951. In the late 1960s, while working for Sanders Associates, Baer created a series of video game console designs. One of these designs, which gained the nickname of the 1966 "Brown Box", featured changeable game modes and was demonstrated to several TV manufacturers, ultimately leading to an agreement between Sanders Associates and Magnavox.[21] In 1972, Magnavox released the Magnavox Odyssey, the first home video game console which could be connected to a TV set. Ralph Baer's initial design had called for a huge row of switches that would allow players to turn on and off certain components of the console (the Odyssey lacked a CPU) to create slightly different games like tennis, volleyball, hockey, and chase. Magnavox replaced the switch design with separate cartridges for each game. Although Baer had sketched up ideas for cartridges that could include new components for new games, the carts released by Magnavox all served the same function as the switches and allowed players to choose from the Odyssey's built-in games.
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