ITE 115 Chapter Four System Software

virtualization

A process that allows a single physical computer to support multiple operating systems that operate independently.

What is a utility suite?

A program that combines several utilities in one package to improve system performance.

Virtualization

Ability to support multiple operating systems on a single physical machine Virtualization software Each virtual machine appears as a separate independent computer Host operating system Guest operating system Parallels Mac to run Window programs in OS X

What are desktop operating systems?

Also called stand-alone operating system: a type of operating system that controls a single desktop or notebook computer

LINUX

Alternative to windows Open source free Google Chrome OS based on Linux Focuses on Internet connectivity and cloud computing Speed is determined by the speed of the Internet

Features of an Operating System

Booting-starting or restarting the computer Features in common with application software Icons Pointer Windows Menus Tabs Dialog Boxes Help Gesture Control File and Folders Files share data and programs Folders store related files

Utility Suites

Combine several program into one package, less expensive, Popular suites, Bit Defender, Norton Utilities, Kasperksky

Self Healing Computers

Could mean an end to computer crashes and performance problems Fix software problems Reroute functions around broken hardware

driver

Every device that is connected to the computer has a special program associated with it called a device driver that allow communication between the operating systems and the device.

Disk Defragmenter

Files are organized in tracks and sectors Tracks- concentric ring Sectors - wedge shaped sections of a track Optimize drives - utility program Identifies and eliminates unnecessary fragments, files become fragmented, broken up and stored in non contiguous space Rearranges file and unused disk space to optimize operations

Operating Systems

Functions Manages computer resources Coordinate memory, processing, storage, printers, and monitors Monitor system performance Schedule tasks Provide security Start up the computer Provides user interface Graphical user interface (GUI) Runs applications Multitasking Foreground and background applications

IBM's Automatic Computing Initiative (ACI)

Handles time consuming maintenance Self-regulating and virtually invisible

Making IT Work for You - MAC OS X Activity Monitor

Has your computer ever just stopped responding? Mac Os X activity Monitor is designed to help.

Disk Clean up

Identifies and eliminates nonessential files and frees up valuable space and improves system performance

Mac OS

Mac OS X runs on Apple computers Two most recent versions: OS X Mavericks Improved power management OS X Yosemite New user interface

Mobile Operating Systems

Mobile OS Embedded operating system Less complicated and more specialized for wireless Some of the best known Android iOS Windows Phone

Android

Mobile operating system originally developed by Android Inc. and later purchased by Google

NOS

Network operating system: Interactive software between applications and computers coordinating and directing activities between computers on a network. This operating system is located on one of the connected computers' hard disks, making that system the network server.

what are the most essential utilities?

Norton utility for virus control

multi-tasking

Operating system that allows a single user to run several application programs at the same time

Define operating systems

Operating systems OS Software that interacts between application software and the computer, handling such details as running programs, storing and processing data, and coordinating all computer resources, including attached peripheral devices. It is the most important program on the computer.

Desktop Operating Systems

Operating systems commonly used by individuals Windows most widely used MAC OS powerful and easy to use UNIX network originally designed for Web LINUX non proprietary; free from the Web

utilities

Performs specific tasks related to managing computer resources or files. Norton utility for virus control and system maintenance is a good example of a utility. Also known as a service program.

warm boot

Restarting your computer while the computer is already on and the power is not turned off.

Self-maintaining servers

Self-repairing Self-updating Self-protecting

Describe the basic features and the three categories of operating systems

Software that interacts between application software, and the computer, handling such details as running programs, storing and processing data, and coordinating all computer resources, including attached peripheral devices. It is the most important program on the computer

Utilities

Specialized programs to make computing easier Most essential utilities Troubleshooting or diagnostic programs Recognizes and correct problems Antivirus programs Guard your computer against viruses Backup programs Copies of files to restore if necessary File compression programs Reduces the size of files for more efficient storage

fragmented

Storage technique that breaks up large files and stores the parts wherever space is available

platform

The operating system. Application programs are designed to run with a specific platform.

Categories of Operating Systems

Three basic categories Embedded operated systems - RTOS real time operating systems Smartphones Smartwatches Video game systems Stand-alone operating systems Also called desktop operating system Network operating systems (linked computers0 Windows Server, Linux, Unix OS stored on network server which coordinates all communication between the other computers

UNIX

Unix operating system Servers on the Web Mainframe computers Personal computers

File History

Utility program included with Windows 8, which makes a copy of all files in the libraries, contacts, favorites, and the desktop

Windows Most used OS (Operating Systems)

Windows 8, Windows 10, Integrates the desktop OS with its mobile OS, Merges Windows desktop and mobile operating systems

Windows Utilities

Windows Operating Systems includes utilities such as: File History Can crate a backup for your hard drive Disk Cleanup Identifies and eliminates non essential files Disk Defragmenter Rearranges files and unused disk space to optimize performance

Systems Software

Works with end users, application software, and computer hardware Handles the technical details Includes the following: Operating system Utilities Device drivers Language translators

Discuss virtualization:

is a process that allows a single physical computer to support multiple operating system that operate independently

antivirus

program, a utility program that guards a computer system from viruses or other damaging programs.