Famous Phrases

1- "We are fast approaching the stage of the ultimate inversion: the stage where the government is free to do anything it pleases, while the citizens may act only by permission." Ayn Rand

2-"We know that advanced economies with stable governments that borrow in their own currency are capable of running up very high levels of debt without crisis." Paul Krugman

3- "In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later." Harold S. Geneen

4- "Little else is requisite to carry a state to the highest degree of opulence from the lowest barbarism but peace, easy taxes, and a tolerable administration of justice." Adam Smith

5- "There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else." Sam Walton

6- "The inscrutability (of economics) is perhaps not unintentional. It gives endless employment to dialecticians who otherwise might become public charges or, at very worst, swindlers and tricksters."
Jack Vance

7- "Do more than is required. What is the distance between someone who achieves their goals consistently and those who spend their lives and careers merely following? The extra mile." Gary Ryan Blair

Operating Systems

  Operating systems are of great importance for a large range of computer activities. They efficiently manage hardware resources. Moreover, they simplify management computer. Enable efficient execution of programs without any conflict between them.  Besides, the general atmosphere of all executions  require changes within the same systems without affecting the performance of existing functions.

The main functions of operating systems:

1)  First of all, Providing User interface: A range of command lines as M.S.D.O.S, TelNet, and others. Is performed within a GUI interface graphics, it contains a menu of options or buttons.

2) Service Support: Allows upgrade versions, includes graphical environments, software drivers, optimizes the quality and speed of execution and security of data and installed software application and error correction among others.

3) Resource Management: Within the Technical administrative resources exist networks that support computer system, memory, secondary storage devices and peripherals input and output.

4) Task Management: Controls access areas to C.P.U and time of each specific task hierarchically.

5) Information management and network communication: Besides, we can easily handle everything related to the installation and use of computed networks and devices inputs and outputs of information and computer data available.

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6) File Management: File management allows creation of files with multiple extensions, access data files and programs, and recovery delete option. On the other hand, it maintains the physical location on the disk.

7) Device Interface: Operating systems are responsible for communicating to peripheral devices when the user sees. Organizes data for rapid, continuous and secure access. Estimating an operating system according to user needs and convenience. As a result, the operating system keeps you close to the computer. Because without it the computer resources can not be used efficiently and properly. In addition, currently operating systems are continuously improved. Further,  it provides a necessary evolution in the context of the needs of the user environment. Further, The company  through new system functions without interfering with the service performed.




In the field of personal computers (PCs), the first best known by the general public were operating systems MS-DOS, Linux, IBM OS / 2, MS Windows and Mac OS X. The Microsoft Window operating system was born in 1985 and is still a leader in the world, however, the Mac OS X operating system has gained great ground today.

However, MS Windows is the operating system that has contributed to the management. In addition, it understanding and use of a computer by a user, either in the development of their professional activity or a domestic function aimed at entertainment and leisure. Therefore, It is considered the OS as the basis on which programs that will allow a person retouching an image with Photoshop. Also, it can  prepare a presentation with Office, listen to music with iTunes, record a DVD with Nero or watch a movie with VLC.

 I hope you have enjoyed this article


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