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OPERATING SYSTEMS (OS) :desktop_computer: (An operating system (OS) is a…
OPERATING SYSTEMS (OS) :desktop_computer:
An operating system (OS) is a set of program containing instructions that work together to coordinate all the activities among computer hardware recources. :question:
Start & shut down a computer
Provide a user interface
Manage programs & memory
Coordinate tasks
Configure devices
Establish an Internet connection
Monitor performance
Provide utilities
Automatically update
Control a network
Administer security
ANDROID
MAC OS
iOS
LINUX
REDHAT
MICROSOFT WINDOWS
Operating System Functions :hammer_and_wrench:
The process of starting or restarting a computer is called
booting
Cold boot :snowflake:
Turning on a computer that has been powered off completely
Warm boot :fire:
Using the operating system to restart a computer
A
boot drive
is the drive from which your computer starts
:check: You can boot from a
boot disk
:check: A
recovery disk
contains a few system files that will start the computer
An operating system includes various shut down option :warning:
Sleep mode saves any open documents and programs to RAM, turns off all unneeded functions, and then places the computer in a low power state :zzz:
Hibernate saves any open documents & programs to a hard disk before removing power from the computer
A
user interface
controls how you enter data & instructions & how information is displayed on the screen
With a graphical user interface (GUI), you interact with menus & visual images
How
an operating system handles programs directly affects your productivity. :thinking_face:
Single user & multiuser
Foreground & background
Single tasking & multitasking
Preemptive multitasking
Multiprocessing
Memory management
optimizes the use of RAM :minidisc:
Virtual memory
is a portion of a storage medium functioning as additional RAM :floppy_disk:
The operating system determines the order in which tasks are processed :desktop_computer: :arrow_right: :printer:
Types of Operating Systems :desktop_computer: :hammer_and_wrench:
Stand-alone
WINDOWS 7
MAX OS X
LINUX
Server
WINDOWS SERVER 2008
NETWARE
Embedded
ANDROID
iOS
