Transcript lesson6a_operatingsyste

Lesson 6A
Introduction to Computers
The Operating System (OS)
The operating system (OS) is software
that controls the interaction between
hardware and user software
home
User Interface
The items you see on the computer
screen are the user interface
home
Graphical User Interface (GUI)
A GUI is a user interface that is made
up of graphic objects instead of text
commands
home
Desktop
The computer’s main interface
home
Icons
The graphic objects that you see on the
desktop are called icons
home
Taskbar
The taskbar appears at the bottom of
the Windows desktop and lets you
launch and manage software programs
home
Start Button and Start Menu
Click the Start button to open the Start
menu, which provides access to your
software programs
home
Shortcut or Context Menu
Right-click on an object to access a
shortcut or context menu that has the
object’s most-used commands
home
Window
When a software program runs, it
appears in a rectangular frame, called a
window
home
Parts of a Window
Title bar
Minimize, Maximize and Close buttons
Scroll bars
Toolbars
Menu bar
home
Active Window
The window that is currently in use
home
Menus and the Menu Bar
You choose some tasks from
commands in lists called menus,
accessed from the menu bar
home
Dialog Box
Gives you choices for what you want
the software to do next
home
Clipboard
Temporary holding area for data that is
being copied or moved
Choosing Edit: Cut or Copy places
information on the Clipboard
Edit: Paste places the information from
the Clipboard into the document
home
Multitasking
The computer’s ability to perform two or
more procedures simultaneously
home
Two Kinds of Multitasking
Cooperative multitasking
Preemptive multitasking
home
File Management
Manage files by saving them in folders
in a hierarchical file system
home
How the Operating System
Manages Hardware
Processing Interrupts
Providing Drivers
Networking computers
home
Utility
A utility is a software program that
enhances or extends the operating
system’s capabilities
home
Kinds of Utilities
Disk defragmenter
Data compression
Backup
Disk management
Screen savers
home
Lesson 6A
The Operating System and
User Interface
Review Questions
What is the Operating System?
What is a Graphical User Interface?
What is the Clipboard?
What are the two kinds of
multitasking?
home