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Functions Of Operating System (Coordinating tasks and configure devices…
Functions Of Operating System
Starting the computer
The process of starting or restarting a computer is called booting
Cold Boot
Turning on a computer that has been powered off completely
Warm Boot
The process of using the operating system to restart a computer
.Provide a user interface
A user interface controls how users enter data and instructions and how information is displayed on the screen
Graphical User Interface (GUI):
user interacts with menus and visual images
Command-line
user uses the keyboard to enter data and instructions.
Manage programs
An OS manages multiple programs and processes while you use the computer
Manage memory
Purpose - to optimize the use of RAM
OS allocates data & instructions to memory while being processed, monitors the contents of memory, and release from memory when the processor no longer requires them.
Coordinating tasks and configure devices
OS determines the order in which jobs are processed.
A job is an operation the processor manages
Jobs include receiving data from input device, processing instructions, sending information to output device and transferring items between storage and memory
A device driver is a small program that tells the operating system how to communicate with a specific device
Plug and Play automatically configures new devices as you connect them
Monitor performance
A performance monitor is a program that assesses and reports information about various computer resources and devices
Managing Files
Viewing Images
Securing A Computer From Unauthorized Access
Uninstalling Programs
Scanning Disks
Control a network
Organizes and coordinates how multiple users access and share resources on a network
Resources – hardware, software, data, and information
Administer security
Define who can access certain resources and when they can access those resources
password
user name
user ID
Update Automatically
Many programs, including operating systems, include an automatic update feature that regularly provides new features or corrections to the program
The operating system automatically checks to see if new updates are available, and if so, downloads them from the Internet and install them on your computer.