The chart illustrates a comparison for three computer operating system and other in the global market ratio over four years from 2012 to 2015. Overall, in three years of this period the Os 1 has most ration in the global market, and the minimum perception for all years over this period related to Os 3.
Although, in 2012, unlike other years, the other operation systems were most hit than Os1, Os2, and Os3, devoting a fewer than 50% of the global marketing, in other years which started from 2013 to 2015, the most popular os was Os 1, with some fluctuations between 38%-52%.
It is notable that Os 2 during four years kept almost it’s ratio and started from 15% in 2012 and had gradual increase, reaching 18% in 2015. Finally, despite the large percentage of other operating systems in the global market in 2012, this perception decreased sharply over the next three years, from 48% to 15% in 2015.