The given pie charts compare the global market share for three computer operating systems to others over a 3-year period, starting in 2012.
Overall, it can be easily witnessed that while there were significant changes in the market share for the computer operating systems 1 and others, those for operating system 2 and 3 were almost unchanged. Moreover, the bar charts shown that the global sale dominance was the operating system 1 through the mentioned period.
Getting into details, in 2012, the worldwide market share for others computer os was the leading one with 48% , followed by the computer os 1 with 20% and the other ones with 17% and 15% of proportion of os 2 and os 3 respectively. In the next year, the international market experienced the dominance of the computer operating system 1, which was 38% having more 3% than the previous leading systems. Meanwhile, that of os 2 remained stable at 17% and os 3 dropped slightly by 5% in the same year.
With the same pattern, in 2014, the global sales percentage of computer os 1 grew up to 47%, nearly doubling that of others computer os except os 2 and os 3, which took 12% and 18% of total market in turn. The year after witnessed the rocket of the share for computer os 1 when it got more than half of the share of all (52%), while the os 2 kept its rate at 18% and the others shared approximately 15% each.