operating systems
On the nature and development of Operating SystemsI have been asked to do an assignment on the nature and development of Operating Systems. I accessed information on the internet to broaden my understanding and to enable me to complete assignment.I will start by giving an overview of the history and development of operating systems. I will then go on to discuss the role of an operating system and identify the main purposes and will look in more detail at four of these. I will then look at available operating system and finish by doing a summery. The history of operating systems is very long and there have been many different variations and many different kinds of operating systems for different situations.To begin with computers did not have operating systems the people working on them had to switch lots of switches to different states of on and of 0's and 1's or binary just to execute a single line of code. This problem was solved by putting the work on some kind of input medium like magnetic tape, punched card and paper tape the jobs still only ran one at a time and the results would come out on the same kind of medium plus printed paper. Some early operating systems
SummaryIn this assignment I have talked about the history and developments of the operating system focusing on CLI's and GUI's. I then looked at the role and the main purposes of the operating system concentrating on file management, process management, I/O management and memory management. The two different operating systems will use the CPU's in different ways. The job of the operating system becomes more complicated in a multi tasking system due to the fact that the CPU can only perform one thing at a time. My first choice of operating system would be Windows XP Home Edition. Available Operating SystemsThere are many different operating systems available including those of the Microsoft family, which include Windows 95, 98, NT, ME and XP. In doing this the operating system will have to set up memory boundaries for software and applications. A process is a piece of software that performs some actions and can be controlled by user, other application or the operating system. In conclusion I would say that the developments in operating systems is a huge advantage for all pc users and it will be interesting to see what new advancements can be made next. All the information needed for this to happen is kept in the process control block. "Process ManagementThe management of the processor has two functions which overlap they are ensuring processor and applications receive enough time to function properly and using as many processor cycles for real work as possible. When you first turn on your computer the first thing it does is the power-on self test (POST) this program is stored in the computers read only memory (ROM) this test checks the central processing unit (CPU), memory and basic-input output system (BIOS) for any errors it then stores the results in a special memory location. An example of input and output would be when you are typing on your keyboard you are then inputting data that you can see on the monitor and on your word application which is the output. One of the most popular CLI operating systems is MS-DOS, which was an offshoot of QDOS or the Quick and Dirty Operating System as it was better known. The operating system does not start as soon as the computer is turned on, it is activated by the bootstrap loader, which loads the operating system into memory and allows it to start to function.
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