Operating System
作者：Sarah Arenas
1. What % use Windows
1.1. Pros:
1.2. Cons:
1.3. Focus on Windows 7
2. Linux: Open Source, Free
2.1. Pros:
2.2. Cons:
3. Apple , OSX, Lepard
4. An operating system (OS) is an interface between hardware and user which is responsible for the management and coordination of activities and the sharing of the resources of the computer that acts as a host for computing applications run on the machine
4.1. What Does it Do?
5. Cell Phones Opperating System
5.1. New node
