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
Turning on a computer that has been powered off completely
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
user uses the keyboard to enter data and instructions.
An OS manages multiple programs and processes while you use the computer
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
A performance monitor is a program that assesses and reports information about various computer resources and devices
Securing A Computer From Unauthorized Access
Control a network
Organizes and coordinates how multiple users access and share resources on a network
Resources – hardware, software, data, and information
Define who can access certain resources and when they can access those resources
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.