CHANGING THE VOLUME Click the volume icon in the bottom right hand corner of the screen START BUTTON MINIMIZE ADJUST SIZE CLOSE PROGRAM OFFICE BUTTON INTERNET BACK BUTTON INTERNET FORWARD BUTTON IMPORTANT OS & GUI INFO An operating system is the most important software on any computer. This software controls the hardware The OS also makes it possible to run other types of software After logging on to the computer you will see the Windows user interface (UI). A UI allows users to give commands to the computer The main screen for the Windows UI is the desktop. The desktop is an on-screen workspace where windows, icons, tools gadgets and images appear. Windows is just one example of OS, created by Microsoft. Microsoft also has competitors. For example, Apple OS is a very popular OS. Linux Is still another OS that is often used to run powerful web server computers IMPORTANT LOCATIONS ON THE COMPUTER START MENU TASK BAR CONTROL PANEL ADDRESS BAR WEB PAGE SEARCH BAR HOME BUTTON REFRESH BUTTON WEB PAGE TABS The Microsoft Office Icons Power Point Word Excel