Operating Systems

The two most popular were probably Lotus 1-2-3 and Borland Quattro.

Bacteria enters the tonsils that contain lymph when you breath......open

Less options = Less problems

UNIX and CP/M

In your Programs list there is a folder called Startup. Anything put in there will start when your computer starts. the answer for the book for A+ is C:\Documents and Settings\All Users\Start Menu\Programs\Startup

that would be DOS

Also called as anti-virus. Scans and detect any virus, coolies...etc(depending on the features of the anti-virus) and removes it. There are lots of anti-virus(lots are not free). But some also provide free ones.

If there is an error, it can do a large amount of damage.

Yes, although the amount of RAM installed by default (512 MB) is a little low, and the machine does not have a particularly powerful processor.

The operating system (OS) controls the hardware. A successful computer system will have hardware and an operating system. Application software is not required. All operating systems have a low level, or machine language to run the operation system and control all hardware.

A combination of batch and interactive system.It let individual user can access the system and get more faster responses but actually accepts and runs batch programs in background when the interactive load is light.

written by DraGonCC

DOS meaning Disc Operating System

ReactOS has few developers, which makes tracking down issues on real hardware much more difficult. For this reason, only virtual machines are targeted. ReactOS is not meant to be useful at this point in time, so it makes no difference on whether it runs on real hardware or not (which it actually usually does). A technically correct implementation is more important at this time than a functional one.

It's an algorithm that is used for CPU schedulers.

I believe the new thing is Vista Media Center with Sp3 (since you asked about an OS)

M/M/1 queuing is called single server queuing coz it has 1 queue and 1 server

Mac OS X is a preemptive multitasking system.

It depends what you mean by widely used and PC. The widely used Apple II computer used Apple DOS while another operating system which was widely adopted (including versions for the Apple II) was called CP/M which was created by Digital Research. They went on to create DR-DOS which was one of the versions of DOS used on the early IBM personal computers. Microsoft had purchased an operating system called QDOS which was adapted by IBM into PC-DOS for their own computers and by Microsoft as MS-DOS for use on computers not made by IBM but following their design (known as IBM clones). These became increasingly popular and so MS-DOS became widely adopted and PC-DOS faded away. Apple went on to develop the Macintosh with its graphical user interface which Microsoft copied to create their Windows operating system.

In most file systems nothing, except its location in the hierarchy of folders.

Operating systems have become more user-friendly and faster over the years. This helps users become more productivity when they are working.

No. An operating system is Linux,windows,osx. Also mcafee runs on the operating system called windows so no. Mcafee is not an operating system

user interface

OS stands for operating system...back in the day computers ran on like a script that was before dos the script was very basic all you could do is basically type documents and save them....it was like a windows 95 command prompt with no mouse...it was pretty much useless unless you were an IT and knew how to use it properly.

Multiusers is when more than one user can do something at one time

Operating System control the overall operation of the computer and it interacts directly with the hardware. Two other types of system softwares (that interacts directly with hardware) are Device Drivers and Unility Programs.

Utility Programs provides an addition to the capabilities provided by the Operating System. These are the computer programs that perform a particular function related to computer system management and maintenance. Some examples of Utility Programs are Antivirus, Data Compression Softwares, Disk Optimization Softwares, Data Backup Softwares etc.