1. Definition: Operating System is software that controls the operation of a computer and directs the processing of programs; by assigning storage space in memory
2. Definition: Open Source means pertaining to or denoting software whose source code is available free of charge to the public to use, copy, modify, sub-license, or distribute.
3. Definition: RAM is a memory device in which information can be accessed in any order.
4. Market Share
5. Windows 8
5.1. Pros
5.1.1. 1. Windows has one big advantage for it provides ready made solutions that can resolved by who ever the master account by the computer.
5.1.2. 2. Microsoft office is also 100% compatible with Windows file, program, documents etc. Interesting fact that Microsoft can and can not be compatible with certain software or systems
5.2. Cons
5.2.1. 1. There is one disadvantage of Widows and that is that there are estimated about 95% percent and above of viruses and malicious(dangerous) software within Windows,
5.2.2. 2. Windows does surprisingly does not meet the customer sanctification needs due to difficulties of systems uses that can create frustrations to the user
6. Mac OS
6.1. Pros
6.1.1. Mac OS is well know for its efficiency, power and stability because the operating system is custom-made to work with Apple's hardware and programs.
6.1.2. Mac OS is best operated by graphic artists, designers, and media(visual and audio) for it outstanding performance of graphic programs. Not to mention that Mac can synchronize with Apple based products such as iPod and iPad that can make a little mobile office in your palm.
6.2. Cons
6.2.1. One big disadvantage of the Mac OS is that it is very pricey, in fact it is a bit more expensive than an average PC sold on the market and there are individuals that can't afford.
6.2.2. One more disadvantage is that Mac are well functioning that they rarely break, due to the antivirus already installed and built in all Mac's, and due to them so durable they long last that the Mac will have some years till it goes out of date while Mac is always creating new PC's and software
7. Linux Ubuntu
7.1. Pros
7.1.1. One good thing about this is that it is free, Linux really doesn't cost anything unless you buy paid support, but over all its free from patents and restrictions that determine how it can be used, so that means that you are in control of what you want to do.
7.1.2. The surprising fact about Linux is that it is fast, it requires much less hardware resources than other competing systems do.
7.2. Cons
7.2.1. Since this system is that not that known it can be a bit intimidating at first but once you get to experience this program, it is easy to control and maintain.
7.2.2. One big disadvantage of Linux is that it is not that user friendly like Windows