Computer Concept week4_1

16/02/2010

Exam

2nd week of March

 
 

System software

• Operating software
  
• Utility software
  

 
 

Operating software

• Managing Processes
  
• Managing Memory
  
• Handing Input and Output
  
• Establish a User Interface
  

   
   

Managing Program

• Single task: run one program at a time
  
• Multitasking: more than one at a time
  
• Multithreading: do more than one thing in a single program
  
• Multiprocessing: more than one CPU running at the same time
  

 
 

Operating system categories

• Single-User, Single task operating system
  

  MS-DOS, PalmOS
  

• Single-User, Multitask operating system
  

  Windows OS, Mac OS, LINUX
  

• Multi-User Operating System
  

  Network operating system
  

 
 

Starting the computer

• ROM BIOS
  
• POST
  
• Loading the OS
  
• Authentication
  

 
 

Utility Program

• Display Utilities
  
• Add or Remove Utilities
  
• File Compression Utilities
  
• System Maintenance Utilities
  
• System Restore and Back Up Utilities
  
• The Task Scheduler Utilities
  
• Accessibility Utilities