Operating System Comparisons

RAM (Random Accesses Memory): RAM is used by CPU when a computer is running to store the information that it needs to be used very quickly but it does not store any information permanently.

i) Memory : cache server (holds recently acesed web pages in its RAM, for spedier aces

Random Access Memory (RAM) - the storage of data and instructions inside the primary storage is temporary. It disappears from the RAM as soon as the power to the computer is

Linux uses the virtual memory to free up private or anonymous pages used by a process. When a page is ‘taken off’ the physical memory, it is copied to the backing store, also sometimes named swap area. Linux uses the term ‘swapping’, which usually refers to swapping a whole process out from another, to describe ‘paging’, which is the swapping of the inactive pages of a process or processes.

Memory segmentation is the division of a computer's primary memory information into sections. Segments are applied in object records of compiled programs when linked together into a program image and when the image is loaded into the memory. Segmentation sights a logical address as a collection of segments. Each segment has a name and length. With the addresses specifying both the segment name and the offset within the segment. Therefore the user specifies each address by two quantities: a segment name and an offset. When compared to the paging scheme, the user specifies a single address, which is partitioned by the hardware into a page number and an offset, all invisible to the programmer. Memory segmentation is more visible

-In single-processor frameworks, the memory should be redesigned when a processor issues upgrades to reserved qualities. These upgrades can be performed instantly or in a languid way. -In a multiprocessor framework, distinctive processors may be reserving the same memory area in its nearby stores. At the point when redesigns are made, the other reserved areas should be discredited or overhauled.

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.

It provides space for your computer to read and write data to be accessed by the CPU. If you add more RAM to your computer, you reduce the number of times your CPU must read data from your hard disk. This normally allows your computer to work quicker as RAM is a lot faster than a hard

When considering which operating system for a home or business office computer or network of computers, it is important to evaluate all areas of the different operating systems options. When evaluating Microsoft Windows XP, Microsoft Windows Server 2008, and Linux operating systems it is important to consider the system requirements, the different editions available, security features, system features, updates and support, user interface, and cost effectiveness. Depending on what a person’s or organization’s needs are will determine which operating system is best fit.

Computers organize memory with master map. They do know ‘where’ the information which they need is.

In single-processor frameworks, the memory should be redesigned when a processor issues upgrades to reserved qualities. These upgrades can be performed instantly or in a languid way. In a multiprocessor framework, distinctive processors may be reserving the same memory area in its nearby stores. At the point when redesigns are made, the other reserved areas should be discredited or overhauled. In disseminated frameworks, consistency of stored memory qualities is not an issue. Then again, consistency issues may emerge when a customer reserves document information.

It is also known as Graphic card. Video Card is a printed circuit board and it contains processing unit and memory. The processing unit is GPU (Graphics Processing Unit) It is mainly used for playing 3D games and movies.

In computer organization and architecture, memory is the most important part of a computer. Every computer must have its own memory. Memory represents two stable or semi-stable states that are representing 1 and 0. It is capable of being written to at least once and read multiple times. In this lab, we will learn briefly on two parts of memory only, which are RAM and ROM. As we know that a memory can either be non-volatile (as seen in a read-only memory) or volatile (used in random access memory).

RAM – Random Access Memory (RAM) is accessed randomly (without accessing preceding memory bytes) by computers. Since data is read randomly, RAM is much faster to read from and write to than other memory devices. RAM is volatile and can contain data only till the computer is powered on, it loses data once the computer is powered off. RAM is called the primary memory and is used to load parts of the operating system and drivers during device boot up. The most common types of RAM include Dynamic RAM (DRAM) and Static RAM (SRAM).

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.