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Operating Systems


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System Software
Programs that control or maintain the operations of a computer and its devices.
Operating System (OS)
Software used to control the computer and its peripheral equipment
Booting
Everything that happens between the time the computer is turned on, performs the operations necessary to get all components functioning, and the operating system loaded
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
Hibernate
saves any open documents and programs to a hard disk before removing power from the computer
user interface
controls how you enter data and instructions and how information is displayed on the screen
Graphical User Interface (GUI)
A way to interact with a computer using windows, images, icons, and other graphical represntations
command-line interface
a user uses the keyboard to enter data and instructions
RAM
A form of Volatile Memory - A random-access device allows stored data to be accessed directly in any random order.
Memory management
optimizes the use of RAM
Virtual memory
is a portion of a storage medium functioning as additional RAM
Windows ReadyBoost
can allocate available memory in flash memory devices as additional memory cache
Operating System
...The master controller on a computer; it manages the computers memory, processing, software and hardware
Driver
Computer program designed to convert data output from one device to a format compatible with another device
Plug and Play
automatically configures new devices as you install them