How Conventional Operating System Features

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.

This is a microprocessor that allows the computer to boot up. It also allows data manigment between the operating system.

makes it difficult for programs to interface. Quite frequently data is just lost and not retrievable.

Medium-term: it removes the processes from the memory, then reinstates them later to continue running.

b) The address and control buses are activated with a memory address position and read command.

a File or space on the hard drive where data from RAM is "swapped" in order to preserve space.

The host writes a byte of data into the data-out register, and sets the write bit in the command register

When several processes are using same processor, then running one process, suspending it, then storing the variable data and switching to other process is called context switch. This effects the two level prediction because every time when we switch between processes, the global branch history, local history table and pattern history table are

Ans: As thread is a shared one and it doesn’t store the data instead it shares the data. so Thread uses smaller resources than the process. A context should be created, that includes a register set storage location for Storage at the time of context switching, and a local stack for recording all the procedure call arguments, return values, return addresses, and thread-local storage. Creating a process results in the memory that is being allocated for instructions of program and data, as well as thread-like storage. Code may also be loaded into the allocated memory.

This will allow the values of the CPU registers and memory allocation to be saved. Context switches are able to flush data and have instruction caches.

This packet contains information such as the frequency of the samples and bandwidth. This is only transmitted once until the information changes. For the implemented solution, the system will only transmit this context packet at the beginning of the transmission and will not transmit unless the system is rebooted.

When looking at an Operating System one could often say that an Operating System is a large sum made up of small separate parts. Much like how Knuth describes computer science being the “wall of mini stones”. The Operating System, or the “OS” can be defined as “software that communicates with the hardware and allows other programs to run”. (TechTerms.com, 2012) The Operating System makes use of two modes known as User Mode and Kernel Mode in order to

1. Software – is to a computer as brain is to a human body. Hardware is functioned by the software. It collects data, organizes them and carries procedures.

A computer is an electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is composed of hardware and software, and can exist in a variety of sizes and configurations. Hardware is the physical equipment of a computer system, including the central processing unit (CPU), data-storage devices, terminals, printer, etc. Software is a program or set of instructions or rules that control the operation of a computer.

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.