Band 6+: The charts below illustrate the global market share of three computer operating systems (OS) compared to other systems from 2012 to 2015.Provide an overview of the information by identifying and describing the key details, and include comparisons where appropriate.

The supplied pie charts compare the global market distribution of three computer operating systems (OS), spanning from 2012 to 2015.

Overall, OS1 exhibited an ascending pattern during the period, while this reverse was true for others, which gradually decline per year, although they were recorded as dominent systems at the beginning of the period. Notably, the potion of OS2 and OS3 remained steady despite witnessing some small fluctuations.

In 2012, the others accounted for the highest share of the global-scale market, at approximately one-half. Followed by OS1 with the portion of 20%, which was a bit higher than OS2 and OS3, with 17% and 15%, respectively. After one year, in 2013, OS1 increased to 38%, surpassing OS3 and becoming the most popular system, while OS2 had no changes, OS3 drop slightly by 5%.

In terms of the final two years, OS1 constantly rose and ranked the first position, reaching a peak at 52%. Conversely, the others sharply decreased and hit the bottom at merely 15%, making up the same proportion with OS3. Moreover, OS2’s share only fluctuated around 17% to 18% during the whole period.