The bar graphs provide information about the market share of computer operating systems on a global scale between 2012 and 2015.
Overall, there are three main operating systems, OS1, OS2, and OS3. They had minor differences in terms of popularity initially. However, after a 3-year period, the percentage of OS1 increased significantly, making it the most common operating system, while the shares of OS2 and OS3 remained relatively unchanged. Additionally, the unspecified systems had a drastic decline over the surveyed period.
Regarding OS1 and other types of operating systems, in 2012, unspecified systems had nearly half of the market, accounting for 48% of the market, while the figure for OS1 was much lower, with one-fifth of the market share. However, over the next three years, the rate of OS1 grew exponentially, reaching 52% in 2015, whereas that of undefined systems saw a dramatic plunge, ending up at 15% in the final year.
Concerning OS2 and OS3, in 2012, the proportion of OS2 comprised 17% of the total market share, followed by a modest increase of one percent at the end of the period. Finally, the popularity of OS3 remained relatively stable, ranging from 10% to 15% in the same period.