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GreenGrass
Function to a Operation System:
Operation system is a program so is standard on every computer. Its software so allow you to do different task on your computer. The Functions can be from copy text to delete files this is an easy example what the function to an Operation System might be. There...
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techgeek.in
In last article we went through History and Evaluation of Operating System where I gave an overview of operating System ad its evolution. Here I will first discuss about instruction and how it is executed.
The basic function performed by a computer is program execution. The program (to be...
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techgeek.in
In the previous article I discussed about some of the basic types of scheduling algorithms. In this article I will discuss about some other advanced scheduling algorithms.
Highest Response Ratio Next (HRRN)
When the present running process completed or it is blocked, choose the ready process...
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techgeek.in
Operating system is large, but modularity is important thus a computer system is made up of layers. The hardware is the lowest level. The kernel running at the next level uses the hardware instructions to create a set of system calls. Virtual machine creates an efficient, dynamic, secure and...
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techgeek.in
The objective of multiprogramming is to have some process running at all times, to maximize CPU utilization. The objective of time sharing is to switch the CPU among processes so frequently that it appears to the user that all programs are running concurrently. In uni-processor only one process is...
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techgeek.in
The objective of multiprogramming is to have some process running at all times, to maximize CPU utilization. The objective of time sharing is to switch the CPU among processes so frequently. In uniprocessor only one process is running.A process migrates between various scheduling queues throughout...
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techgeek.in
Memory is central to the operation of a modern computer System. Memory consists of a large array of words or bytes each with its own address. The CPU fetches instructions from memory according to the value of the program counter. These instructions may cause additional loading from and storing to...
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techgeek.in
In the previous article- Memory Management Basics I discussed about different binding schemes. In this article I will discuss about the concepts dynamic loading, dynamic linking and shared libraries and different memory mapping schemes and protection.
Dynamic Loading
In our discussion so far,...
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techgeek.in
Before discussing memory allocation further, we must discuss the issue of memory mapping and protection. When the CPU scheduler selects a process for execution,the dispatcher loads the relocation and limit registers with the correct values as part of the context switch.Because every address...
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GreenGrass
What is a Firewall?
Well lets say your computer is your house. When the door is all the time open everyone can go in out as they want. A firewall is like a door with lock on. So you can lock people out from your computer if you think they shouldn't have access to it. So all the time someone...
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techgeek.in
An operating system can be defined as:
An operating system is a program that acts as an interface or intermediary between the user of a computer and the computer hardware.
An operating system exploits the hardware resources of one or more processors to provide a set of services to system users...
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pradeep
Mozilla Firefox is widely being used today. But some people prefer Internet Explorer more than Mozilla Firefox because Mozilla Firefox consume a lot of memory and sometimes does not respond. Did you notice that Mozilla Firefox consumes a lot of memory over a period of time and sometimes slows down...
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Alex1239
I see a lot of Windows users always complain "My computer/pc is too slow. How to speed up my pc speed performance?" and they need a new PC. Upgrading the PC is always a viable option for better performance, but here are things that you can do to keep your PC healthy and i am sure this will help you...
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pradeep
Windows: A family of operating systems for personal computers, Windows dominates the personal computer world, running, by some estimates, on 90% of all personal computers. Like the Macintosh operating environment, Windows provides a graphical user interface (GUI), virtual memory management,...
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pradeep
Q: What are the basic functions of an operating system?
A: Operating system controls and coordinates the use of the hardware among the various applications programs for various uses. Operating system acts as resource allocator and manager. Since there are many possibly conflicting requests for...
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pradeep
As you all know with the launch of Microsoft Office 2007, Microsoft unveiled the Office Open XML format in the office suite.Office Open XML (also referred to as OOXML or OpenXML) is a free and open Ecma International standard document format, and a proposed ISO/IEC standard for representing...
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GreenGrass
How does the computer work?
Here i will show you how the computer is build up how it works. Lets start with CPU.
CPU:
This is the CPU stands for "Central Processing Unit" this is the brain to the computer. This is why you can running diffrent programs at the same time. If you press...
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Amit Ray
Ramlal Bhagat, a Class XII. student from Haryana,India has developed a 32-bit operating system demonstrated to be far Superior to any of the desktop operating systems in the market today. The program has been named "O-Yes". O-Yes provides operating system services on any Pentium-based personal...
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pradeep
Have you ever wondered what the difference between a folder and a directory is? Or did you ever try to find the folder ?Control Panel? on your hard drive and wondered where it was? The answers lie in understanding a little bit about system folders.
System Folders & What Happened to...
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pradeep
If you're an IT support professional who's comfortable with working at the command prompt in Windows, you might quickly find yourself lost when you first open a command line in Linux. Most of the familiar DOS commands you grew up with don't exist in Linux. So you find yourself facing the daunting...
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