The operating system (OS) has two view-points it provides services to:
1. User view
2. System view
User view: From user point of view operating system should be convenient and easy to use and interact with. It should be better performance vice. Following are the two, some of important services provided by the operating system that are designed for easy to use computer system.
a) Program Execution: The major purpose of the operating system is to allow the user to execute programs easily. The operating system provides an environment where users can conveniently run or execute programs and as well as able to end programs. Running programs involves memory management (the allocation and de-allocation memory), device management, processor
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sensors, motion detectors etc.). Almost all programs require some sort of input and produces output. This involves the use of I/O operations. The operating system hides the low level hardware communication for I/O operations from the user. User only specifies device and the operation to perform, and only see that I/O has been performed (i.e. choosing one of the printer in office for printing service). For security and efficiency, user level programs cannot control I/O operations. Therefore, the operating system must facilitate these services.
System view: From a system point of view operating system should allocate resources (use system hardware) in a fair and efficient manner. This includes algorithms for CPUs scheduling and avoiding deadlocks etc. Following are two services for system hardware.
a) Resource Allocation: Modern computers are capable of running multiple programs and can be used by multiple users at the same time. Resources allocation/management is the dynamic allocation and de-allocation by the operating system of (hardware) including processors, memory pages, and various types of bandwidth to the computation that compete for those resources. Operating system kernel, in which all these functions, algorithms and services reside, is in charge of taking care of resource allocation. The objective is to allocate resources so as to optimise responsiveness subject to the finite resources available.
Operating Systems are complex pieces of software that are designed for powerful hardware, easily capable of running many programs at once, the prioritize hardware task requests known as ‘system calls’ and allocate them memory space or processing time as needed.
The Operating system is one most important parts of anything that runs on technology. It manages the computers memory and processes the information for the software and hardware. There is different operation system for pc, tablets, smart cars, and smartphones.
A computers operating system (OS) is the core of the computer and is more than just software. The OS controls the computer’s memory and processes as well as its hardware and software. It is the brain of the computer. Software applications on the other hand perform a certain task. Ex. Google Chrome provides internet and Adobe allows PDF files to be read (among other things). The OS is what makes all of these applications work successfully and accomplish whatever the application is designed to accomplish.
In order for IT System to become active first Computer Programs and Programming must be put in place. Computer Programs and Programming are simple terms an executable set of commands for the computer to perform. A process is an actively running program which may or may not is running in the background. A program running in the background is one that the computer user may not be aware of, but it may be providing useful services such as an ability to connect to other computers. It reads and executes program instructions, performs calculations, and makes decisions (slideshare.net).
Operating systems are vital to the use of computers, they tell the machine what it is, what language, where the programs are, when things are stored, how to do things, the instruction codes to do everything. The system is in charge of security such as ensuring that unauthorised users do not access the system. There are many types of operating systems, a few are listed below:
Another good example to show an operating system as an even driven application will be the Auto play. For example, when you input your USB stick to your computer it will come up with a screen with multiple option on how you want to open up your USB stick. If you have a video or music files
Operating systems have the responsibility to ensure that users do not access the system illegally. They also perform different tasks such as managing system resources, communicate between software and hardware, monitoring performance and operate utilities and applications.
Operating systems were not in existence before the 1960s. The definition of operating systems is a program designed to run other programs on the computer and is the most important
Task 1 – P2 Purpose of Operating Systems An Operating System (OS) is a software program that allows the computer hardware to be able to communicate and operate with the computer software. Without a computer Operating System, a computer and software programs would be useless. Initially the Operating System acts as an interface between the user of a computer and the computer’s hardware.
The operating system is the set of instructions that direct the computer to accomplish specific tasks such as document production and spreadsheet calculations.
In order for the program to run
There are many operating systems that are common on the Internet today. Back when computers could only handle one command at a time, in the 1950 's, was very time consuming. Now, about sixty years later, a computer 's operating system can handle many applications at one time while delivering speed and is user friendly. Although there are many Operating Systems that are available, there are onle a few of them that are well knon and is commonly used. Some of the most common Operating Systems that are used on the Internet are the Windows platforms such as Windows XP, Sun Solaris, UNIX, Apple, and Linux Apache.
Systems software includes the programs that are dedicated to managing the computer itself, such as the operating system, file management utilities, and disk operating system.
This paper will discuss three main operating systems, Windows, Linux, and OS X. All three of these operating systems have features which are unique unto themselves. Although there may be arguments as to which one of these three operating systems is better it really all comes down to what features are needed for each user. This paper will describe the features that each of these operating systems has to offer.
When you start a pc with an OS, it allows you to do projects like: