On the first computers, without an operating system, every program needed the full hardware specification to run correctly and perform standard tasks, and its own drivers for peripheral-2like printers and card-readers. Not every computer had an operating system.
That depends on the computer and who set it up.
Mac OS
The space reserved for virtual memory varies on different computers. It depends on the operating system in use and how much system memory is available.
XP is the abbreviation assigned to a computer operating system designed by Microsoft that is now outdated.
Practically all of them have O.S's, as I doubt that most people will ever see one without some mac o.s on it or xp or vista on it. However, all stock machines that are loaded/downloaded/installed with programs/software,etc come without operating systems. I have seen my share of them, as I used to work for a computer store myself, though DOS is nothing to brag about, unless you are some nerdy IBM veteran that designed it.
All modern day computers have some form of operating system.
All computers must have some kind of Operating system to function.
The operating system.
All computers need some sort of operating system.
For computers the term OS refers to Operating System.
Yes, or they wouldn't be able to function.
yes, all computers need a set of instructions or program to tell it how to function. This what a operating system does for a computer.
DOS, which stands for Disk Operating System.
The computers name must be unique for all computers on the same network
Yes. As of 2015, Android has the largest installed base of all operating systems.
Yes, that is was the operating system of Macintosh Computers are called.
window operating system