Whate are they and why are they so important?
What is an operating system, and what does it do?
An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function.
An operating system can be looked at as a computer traffic cop. It makes sure no programs interefere and cause the system to crash. It is also incharge of handling security of your computer. It ensures that no unknow content can trace into the computer
Progression of the operating system
Most desktop or laptop PCs come pre-loaded with Microsoft Windows. Macintosh computers come pre-loaded with Mac OS X. Many corporate servers use the Linux or UNIX operating systems. The operating system (OS) is the first thing loaded onto the computer -- without the operating system, a computer is useless.
More recently, operating systems have started to pop up in smaller computers as well. If you like to tinker with electronic devices, you're probably pleased that operating systems can now be found on many of the devices we use every day, from smart phones to wireless access points. The computers used in these little devices have gotten so powerful that they can now actually run an operating system and applications. The computer in a typical modern cell phone is now more powerful than a desktop computer from 20 years ago, so this progression makes sense and is a natural development.
Top 15 best operating systems for PC
14) Windows Vista
13) Red Hat Linux
12) Google Chrome OS
11) Mac OS X Leopard
9) Windows XP
7) Linux Mint
6) Windows 8.1
5) Macintosh OSX
4) Windows XP Professional
2) Windows 8
1) Microsoft Windows 7