The operator loaded into a machine

Big image

Read from the tape

Growing prevalence of computers broadens the base of its users. If the queue management shell command line should certainly be good for the system administrator (the person who is responsible for the maintenance, in all its forms, the system itself) and even allows you to perform necessary tasks efficiently and quickly (it can be said that this is precisely the purpose of the shell).


However, requires knowledge of the system is not trivial. A user who has the need to use the computer, for example, for word processing, is interested to become productive in the shortest possible time and, on the other hand, the presence of only shell characters would exclude the possibility of use computer by a wide range of users.


This is the reason that prompted the researchers to design shell that, at least, allow it queue management to do the minimum so as simple as possible, to the limit without requiring any specific knowledge from the user. Are those who today are called shell desktop systems because the principle on which they are based is that of the so-called desktop metaphor.


The goal is to put the user in front of a familiar and intuitive environment using systems that make use of graphical representations, icons to represent applications and allow interacting with them by means of a massive use of pointing devices (for example, the mouse). In the laboratories of MIT (Massachusetts Institute of Technology) was implemented for the first time in 1984, the X Window System, a graphical system for Unix environments.


The aim was precisely to create an interface that would make easier email queue system the use of computers. At the time it had still monochrome graphic display queue management and computing powers were limited. In 1988 the X Consortium association composed primarily of researchers from MIT, and the first implementations of the graphics system X.


The system became standard was called X386 and was used on the machines of the industrial partners of the project: IBM, Sun, HP. Between 1991 and 1992 a group of researchers is detached from the X Consortium, performing what is called queue management in the jargon of Linux fork. In practice, at some point the way of the development of the project, which was previously only, forks.


The new project was called XFree86 was intended, so prevalent, the purpose of the adaptation of the X Window System to systems with Intel email queue system architecture. In recent times the queue management development of X as free software is edited by the X. Foundation.


In some operating systems, the desktop operating system and represent email queue system a monolithic block: the two are inseparable, the only interaction with the operating system is by means of graphical shell and you can not do what the graphical environment does not allow. The case of Linux instead we are faced to a modular system highly: it is a garment that can be worn over the system itself and changed as and when they queue management want to.

Big image
Queuing system with voice for hospitals or clinics using php mysql (Antrian rumah sakit)