When you purchase a personal computer, it usually has a ______ ______ installed on its hard disk.
consists of the programs that control or maintain the operations of the computer and its devices
Operating Systems (OS)
a set of programs containing instructions that work together to coordinate all the activities among computer hardware resources
On handheld computers and many mobile devices such as smart phones, the OS may reside on a _____ chip.
the core of an OS that manages memory and devices, maintains the computer's clock, starts programs, and assigns the computer's resources , such as devices programs, data, and info
The kernel is _____ ______, which means it remains in memory while the computer is running.
Other parts of the OS are _______, that is, these instructions remain on a storage medium until they are needed.
When you purchase a computer, it usually includes a boot disk in the form of an ______ ______.
Shut Down Options
powering off the computer, placing the computer in sleep mode, and hibernating the computer
Both _____ mode and ______, which store the current state of all open programs and documents, are designed to save time when you resume working on the computer.
saves any open documents and programs to RAM, turns off all unneeded functions, and then places the computer in a low-power state
saves any un open documents and programs to a hard disk before removing power from the computer
controls how you enter data and instructions and how information is displayed on the screen
Graphical User Interface (GUI)
what most users today work with, you interact with menus and visual images such as buttons and other graphical objects to issue commands
when a user types commands or presses special keys on the keyboard to enter data and instructions
_____ _______ and other _______ devices, often use a Single User/ Single Tasking OS.
smart phones; mobile
Single User/ Multitasking OS
allows a single user to work on two or more programs that reside in memory at the same time
In a Single User/ Multitasking OS, both programs can run __________, and users today typically run multiple programs _________.
Some Operating Systems use _________ multitasking to prevent any one process from monopolizing the computer's resources.
when the operating system interrupts a program that is executing and passes control to another program waiting to be executed
An Advantage of Preemptive Multitasking
the operating system regains control if one program stops operating properly
Networks, serves, mainframes, and supercomputers allow hundreds to thousands of users to connect at the same time, and thus are _______.
supports two or more processors running programs at the same time, involves the coordinated processing of programs by more than one processor, and increases a computer's processing speed
continues to operate when one of its components fails, ensuring that no data is lost
Fault Tolerant Computers have _______ components such as processors, memory, and disk drives.
Airline Reservation Systems, Communication Networks, Automated Teller Machines, and other systems that must be operational at all times use ____________ computers.
the os allocates a portion of storage medium, usually the hard disk, to function as additional ram
Because _____ memory is slower than RAM, users may notice the computer slowing down while it uses _____ _______.
virtual; virtual memory
the area of the hard disk used for virtual memory, swaps data, information, and instructions between memory and storage
the technique of swapping items between memory and storage, very time consuming for the computer
When an OS spends much of its time paging, instead of executing application software, is is said to be _______.
can allocate available storage space on removable flash memory devices as additional memory cache
receiving data from an input device, processing instructions, sending information to an output device, and transferring items to storage to memory and from memory to storage
A ______ ______ ______ does not always process tasks on a first-come, first-serve basis.
multiuser operating system
a segment of memory or storage in which items are placed while waiting to be transferred from an input device or to an output device
the process that sends documents to be printed to a buffer instead of sending them immediately to the printer
a program that intercepts documents to be printed from the operating system and places them in the queue
Driver (Device Driver)
a small program that tells the operating system how to communicate with a specific device
Each device on a computer, such as the mouse,keyboard, monitor, or printer, requires their on specific ______.
a program that assesses and reports information about various computer resources and devices
many software makers provide this which is free downloadable updates to users who have registered and/or activated their software
Server Operating System
an operating system that organizes and coordinated how multiple users access and share resources on a network
Some Operating Systems have ______ features built into them, while in others, the server operating system is a set of programs _______ from the OS on the client computers that access the network.
the person overseeing the network operations, who uses the server operating system to add and remove users, computers, and other devices to and from the network
The Network Administrator also uses the ______ Operating System to install software and administer network security.
enables computer and network administers to access all files and programs on the computer or network, install programs, and specify settings that affect all users on a computer or network
User Name or User ID
a unique combination of characters, such as letters of the alphabet, or numbers, that identifies one specific user
a private combination if characters associated with the user name that allows access to certain computer resources
To protect sensitive data and information further as it travels over a network, the operating system may ______ it.
Device Independent Operating Systems
operating systems that run on computers provided by a variety of manufacturers
The Advantage of Independent Operating Systems
you can retain existing application software and data files even if you change computer models or venders
When you purchase a new computer or mobile device, it typically has an ______ ______ preinstalled.
Purchasing an operating system upgrade usually costs ______ than purchasing the entire operating system.
The Application Software may or may not be ________compatible, meaning it may or may not run on new versions of the operating system
Stand Alone OS
a complete operating system that works on a desktop computer, notebook computer, or mobile computing device
Some Stand Alone OS are called _______ _______ _________ because they also work in conjunction with a server operating system.
client operating systems
mini-program with minimal functionality that connects to another program or provides information, example: calendar
set the standard for operating system ease of use and has been the model for most of the new gui's developed for non macintosh systems
Although some versions of UNIX have a command line interface, most versions of UNIX offer a ________ user interface.
(one of the faster growing operating systems) introduced in 1991, a popular, multitasking unix-type operating system
Linux is an ______ _______ software, which means its code is provided for use, modification, and redistribution
Some of these stand-alone operating systems do include networking capability; however, ______ operating systems are designed to specifically support all ______ of networks including medium to large sized businesses and Web Servers.
Windows Server 2008 Family
windows server 2008 standard, windows server 2008 enterprise, windows server 2008 datacenter, windows web server 2008, and windows server 2008 for itanium-based systems
Windows Server 2008 Enterprise
for medium to large sized businesses, including those with e-commerce operations
Windows Server 2008 Datacenter
for businesses with huge volumes of transactions and large scale databases
Windows Server 208 for Itanium-Based Systems
for computers with 64-bit processors that function as a web server
Through Virtualiztion, for example, OS such as Windows Server 2008 can separate a _______ server into ______ ________ servers.
physical; several virtual
More About UNIX
it is a multipurpose operating system because it is both a stand alone and server operating system
a version of unix developed by sun microsystems, server operating system designed specifically for e-commerce applications
Windows Embedded CE
scaled down windows operating system designed for use on communications, entertainment and computing devices with limited functionality
Examples of Windows Embedded CE
voIP telephones, industrial control devices, digital cameras, digital photo frames, fuel pumps, security robots, handheld navigation devices, portable media players, ticket machines, automated teller machines
Windows Phone 7
a sucessor to windows mobile,includes functionality, programs, and a user interfaces designed for specific types of smart phones
(utility) a type of system software that allows a user to perform maintenance type tasks usually related to managing a computer, its devices, or its programs
an icon on the desktop or in a folder that provides a user with immediate access to a program or file
a program that attempts to locate a file on your computer based on criteria you specify
stores a variety of information about a file, including its name, date created, date modified, author name, and so on
the utility that allows users to display, copy, and print the contents of a graphics file, such as a photo
a utility that reorganizes the files and unused space on a computer's hard drive so that the operating system accesses data more quickly and programs run faster
allows users to copy selected files or an entire hard disk to another storage medium such as another hard disk,optical disc, usb flash drive, or tape
a utility that causes a display device's screen to show a moving image or blank screen if no keyboard or mouse activity occurs for a specific time
why screen savers were originally developed, in which images could be etched permanently on a monitor's screen
a utility that detects and protects a personal computer from unauthorized intrusions
a potentially damaging computer program that affects or infects a computer negatively by altering the way the computer works without the user's knowledge or permission
(malicious software) software that acts without a suer's knowledge and deliberately alters the computer's operations
copies itself repeatedly, for example, in memory or over a network, using up system resources and possibly shutting down the system
protects your computer against viruses by identifying and removing any computer viruses found in memory, on storage media, or in incoming files
a program placed on a computer without the user's knowledge that secretly collects information about the user, often related to web browsing habits
a program that displays an online advertisement in a banner or pop-up window on web pages, email, or other internet services
program that warns or blocks you from a potentially fraudulent or suspicious web site
a scam in which a perpetrator attempts to obtain your personal and/or financial information
program that allows you to view images and animation, listen to audio, and watch video files on your computer
Disc Burning Software
writes text, graphics, audio, and video files on a recordable or rewritable cd, dvd, or blu-ray disc