Linux or Unix are open source and some are versions are free and others aren't. Unix is based off of Linux, and both have many different variations. One popular Unix system is Ubuntu
There is no criteria for judging when an operating system is complete, so many are in a state of development. many new open-source hobby operating systems are created every day.
States define an exact operating condition of a system, where modes define the set of capabilities or functions which are valid for the current operating condition. (Source: http://themanagersguide.blogspot.com.au/2011/01/6322-define-life-cycle-system-modes.html)
There are many recently developed software in the market today. But the most talked about is probably the newest and latest version of the Android operating system. Honeycomb is out now and the next one which is called the Ice Cream Sandwich will soon be released as well.
Imaging software is a type of backup software, but it serves a different purpose. Standard backup software creates copies of files that are stored on a separate drive or media. These files can then be viewed or copied back as needed, but only the files and the data they contain are backed up. Imaging software actually captures the entire state of a disk, including its partition tables and other information. In essence, a disk image is a clone of the source disk. This means an entire drive can be restored to an exact state, including the operating system and boot sectors in the event of a catastrophic hardware failure.
The operating system is Ubuntu Linux. It has a 4 GB Solid State hard disk Drive.
system state data
Also known as the process state, the execution context is the internal data the Operating system uses to control or supervise a process.
Windows User State Migration Tool
The parts of a computer system that you cannot touch include the data stored in the hard drive or solid-state drive, the programs and operating system software running in the computer's memory (RAM), and the electronic signals traveling through the motherboard and other internal components. These components are essential for the computer to function properly, but they are not physically accessible or tangible to the user.
An interrupt operating system is a type of operating system that can pause the execution of tasks to handle unexpected events or requests. When an interruption occurs, the operating system temporarily stops the current task, saves its state, and then processes the interrupt. Once the interrupt is handled, the operating system resumes the original task from where it left off. This allows the system to efficiently manage multiple tasks and respond to external events in a timely manner.
The relationship between an application program and the underlying hardware is usually shown in the form of a stack of layers as shown below: # Application # Application Programming Interface (API) # Operating System # Device Driver # Hardware Most applications need to know how to talk to the operating system - which is why the operating system will provide a set of programming libraries knows as APIs or SDKs (Software Development Kits) for programmers to use when writing applications. The APIs sit between the operating system and the running application. The running application relies on the API to perform essential tasks on the computer by telling the operating system what it wants to do - which is why a program that is written to use Windows Vista APIs will not run on an Apple Mac without some kind of emulation or help. Because there are so many different pieces of hardware, it would be impossible for an operating system to support them all (especially the lesser known devices). That's why hardware manufacturers will write device drivers for different operating systems, so the operating system knows how to talk to the hardware.
The major function of any operating system is to control and manage hardware. The other four most common functions of the operating system are to run applications, store data, retrieve data, and manage user content for multiple users.