Operating systems.
Device drivers.
Middleware.
Utility software.
        
                    
             
        
        
        
The <span>element located on the top left of the Word screen is the Quick Access Toolbar.  </span>On the quick access toolbar, you can find some of the common functions that you will need to use on a regular basis, it contains commands that are used most often, for example Redo, Undo and Save etc.
        
             
        
        
        
Antivirus software, or anti-virus software, also known as anti-malware, is a computer program used to prevent, detect, and remove malware. Antivirus software was originally developed to detect and remove computer viruses, hence the name.