Operating Systems

Windows is a graphical environment operating system.

it provides a user name and a password

1. Windows

2. Macintosh

3.Linux

Those may be operating systems of automated machines.

Yes, it is multi-tasking.

It manages the Hardware resources

maintanes the system of files

controls input and output operations

The two main operating systems for personal devices (i.e smartphones, tablets) is iOS (produced by Apple Co.) and Android (produced by Google).

A apple computer is a fast and good looking computer they are safer then pcs with viruses, they have amazing internet, and they have great communication applications.

A PC is a better gaming system, slower than macs, and is not as protective from viruses.

A closed operating system is that does not allow you to have root access to the file system (ex. delete files or change files related to the graphical interface or how your computer does things)An example of this type of operating would be iOS which runs on iPod touches, iPhones, Apple TV, and iPad. An open operating system is the exact opposite of a closed operating system and is how all operating systems on a computer work which includes Mac OSX, Windows 7,XP, Vista, and Linux.

Software that includes an operating system as well as utilities is called an operation system package. Two examples of this type of software system are Windows and Linux.

An operating system is a program that manages the computer hardware.It also provides basis for application programs and acts as an intermediate between the computer user and the computer hardware.

MS Publisher is an application software. It is a part of Office suite. It is used to design things for publishing.

The operating system communicates to the computer hardware using the GUI program.

A real time operating system needs to be "event driven" and have the ability to perform certain tasks in a very timely manner.

Most true real-time operating systems use interrupts to handle events as they occur, such as a time-critical input message from a serial port or a digital I/O event from some peripheral hardware.

Next, there should be some kind of prioritization, meaning that one process may be time critical, such as controlling the rods at a nuclear reactor, but other processes might be a little less critical, such as dimming the hallway lights at the reactor facility after hours.

Third, there must be a mechanism in place for "multitasking", meaning that the computer must be able to switch between multiple active processes. Some operating systems create a process "stack" for each process, and if a high priority process is to be activated to handle an event, the operating system simply switches control to the higher priority process by loading the current data from the process stack. A true real time operating system can do that in just a couple clock ticks.

single user os is that os which support only one user at a time and multi user os is that which support more than one user at the same time

Yes, the earliest computers built did not have operating systems (the idea of an operating system had not been thought of) so individual programs were loaded and run one at a time. The first computer I used (in 1973) had no operating system, programs punched on decks of cards were loaded and run one at a time.

The first microcomputers sold did not have enough memory to load an operating system. When Bill Gates wrote the original version of Microsoft BASIC for the MITS Altair 8800 the standard 8800 came with only 256 bytes of RAM and Microsoft BASIC could not run with less than 4096 bytes of RAM (it was already very expensive to expand the RAM to that size), so Microsoft BASIC was written to run without an operating system.

There are also embedded system computers that are dedicated to one purpose and usually run one preloaded program supplied by the manufacturer and do not allow other programs to be loaded. While some embedded system computers do use an operating system, it is also common for the preloaded program to be written to directly control all the hardware directly without the need for an operating system.

Draw a detailed system flowchart illustrating the steps performed by an OS as it

executes the instruction to back up a disk on a single-user computer system. Begin with

the user typing the command on the keyboard and conclude with the display of the result

on the monitor.

The difference is that competing processes in an operating system compete for resources. Cooperating processes share resources, and some even work together to complete the same task.

Linus Torvalds was the principal engineer who created the Linux kernel, the chief component behind modern Linux operating systems used today such as Ubuntu, SUSE, or Fedora.

software that is built into the computer

Windows XP was the most popular operating system.

Open source operating systems can trace their ancestry to many trends in computing of the 60s and 70s. If one had to put a face on the concept, it would be Richard Stallman. Stallman formed the Free Software foundation, and developed or commissioned many of the necessary components of a free and open-source operating system.

Note that Stallman doesn't like the term "open-source", since the source can be available but still restricted in what you are allowed to do with it.

Any operating system that allows for "paging" or "swapping" is capable of this.