1. Ram: a memory device in which information can be accessed in any order
2. Open Source: Refers to a program in which the source code is available to the general public for use and/or modification from its original design free of charge
3. Operating System: A collection of software that manages computer hardware resources and provides common services for computer programs
4. Linux Ubuntu 12.10
4.1. pros
4.1.1. 1. Has an enormous free software library. On Unbuntu, sudo apt get install is one the one line command you can use to download and install almost everything you'll need, instantly.
4.1.2. 2. It is an open source so any kind of developer or company can contribute to making the platform better.
4.2. cons
4.2.1. 1. It is still not compatible 100% with a lot of hardware.
4.2.2. 2. Still not as user friendly as windows.
5. Mac OS X
5.1. pros
5.1.1. 1. OS X does not require you to put in code in a terminal to get some applications and to get them working.
5.1.2. 2. OS X has its own app store
5.2. cons
5.2.1. 1. Not to many free apps in OS X app store. Most apps are around $15.
5.2.2. 2. Apple computers are much more expensive than your average PC.
6. Windows 8
6.1. pros
6.1.1. 1. Has a more sophisticated file explorer
6.1.2. 2. Windows 8 has a new task manager;it has a simplified view and more complex detailed view to suit the needs of both average and power users
6.2. cons
6.2.1. 1. In some cases, you really do need to backup app data and not files and that is where there is a sinking gap in Windows 8.