MODULE 10
OPERATING SYSTEMS AND UTILITY
PROGRAMS
OPERATING SYSTEM
An operating system (OS) is a set of programs
containing instructions that work together to coordinate
all the activities among computer
hardware resources.
OPERATING SYSTEM FUNCTIONS
STARTING AND SHUTTING
DOWN A COMPUTER PROVIDING A USER
Booting is the process of starting or restarting a
computer. Each time you boot a computer, the kernel INTERFACE
and other frequently used operating system instructions
A user interface controls how you enter data and
are loaded, or copied, from storage into the computer’s
instructions and how information is displayed on the
memory (RAM). Shut down options including powering
screen.
off the computer, placing the computer in sleep mode,
and hibernating the computer
COMMAND-LINE
GRAPHICAL USER INTERFACE
To configure devices, manage system resources, and
INTERFACE troubleshoot network connections, network
Graphical user interface (GUI) functions to interact with administrators and other advanced users work with
menus and visual images such as buttons and other a command-line interface.
graphical objects to issue command.
MANAGING MEMORY
MANAGING PROGRAMS The operating system allocates, or assigns, data and
Operating system handles running programs directly. A instructions to an area of memory while they are
being processed. Virtual memory is a concept in
multiuser operating system enables two or more users to
run programs simultaneously. A multiprocessing which the operating system allocates a portion of a
storage medium, usually the hard disk, to function
operating system supports two or more processors
running programs at the same time. as additional RAM.
CONFIGURING
COORDINATING TASKS
DEVICES
The operating system determines the order in which
A driver is a small program that tells the operating
tasks are processed. A buffer is a segment of memory or
system how to communicate with a specific device.
storage in which items are placed while waiting to be
Today, most devices and operating systems support
transferred from an input device or to an output device.
Plug and Play. Plug and Play means the operating
system automatically configures new devices as
you install them.
ESTABLISHING AN
INTERNET CONNECTION MONITORING
Operating systems typically provide a means to establish
Internet connections. Some operating systems also
PERFORMANCE
include a Web browser and an e-mail program, enabling Operating systems typically contain a performance
you to begin using the Web and communicate with monitor. A performance monitor is a program that
others as soon as you set up the Internet connection. assesses and reports information about various
computer resources and devices.
PROVIDING FILE
MANAGEMENT AND UPDATING SOFTWARE
OTHER UTILITIES AUTOMATICALLY
Operating systems often provide users with the Most operating systems, include an automatic
capability of managing files and other utilities. update feature that automatically provides
updates to the program
CONTROLLING A
ADMINISTERING
NETWORK
SECURITY
Some operating systems are designed to work with a
server on a network. A server operating system is an
Computer and network administrators typically
operating system that organizes and coordinates how
have an administrator account that enables them
multiple users access and share resources on a
to access all files and programs on the computer
network.
or network, install programs, and specify settings
that affect all users on a computer or network.
TEAM 7
Reynald Animos
Rozelle Onrubia
Francesca Nicole Carrillo
Missie Escovidal
Rica Mae Romero
