The four pie charts illustrate the global market share of three computer operating systems and other operating systems from 2012 to 2015.
Overall, OS 1 experienced a steady increase in market share, while OS 2 saw a significant decline. Meanwhile, OS 3 and other operating systems fluctuated over the given period. In 2012, OS 1 held 48% of the market, making it the most dominant system. This percentage gradually increased to 52% in 2015. OS 2, on the other hand, started at 20% in 2012 but saw a steady decline, dropping to just 15% by 2015.
OS 3 remained relatively stable, beginning at 15% in 2012 and slightly increasing to 18% in 2014 and 2015. In contrast, the share of other operating systems fluctuated, decreasing from 17% in 2012 to 10% in 2013 before rising again to 23% in 2014 and then falling back to 15% in 2015.
In conclusion, OS 1 strengthened its market dominance, while OS 2 declined significantly. The share of OS 3 remained fairly constant, whereas other systems fluctuated throughout the period.