Operating systems

For this assignment, you will write about 5 popular PC operating systems: 
Mac OS
Linux
Chrome OS
Android build
iOS.

I will need an informative essay explaining the 5 following questions for each operating system.

1.    A brief overview of the history of the operating system (Who invented it? When was it first released? How has it changed?)

2.   What are some of the most notable features of this operating system?

3.   What distinguishes this operating system from others?

4.   What are the current strengths and weaknesses of this operating system?

5.   Why might someone prefer to use this operating system?

Your essay should be thoughtfully organized, and your sources of information should be cited (provide links to online sources or titles and authors for offline sources). 

There is no minimum length requirement, but I expect you to include enough information to fully answer the questions listed above.