Input/Output Organization             

• The computer system's input/output (I/O) architecture is its interface to the outside world.
  
• Till now we have discussed the two important modules of the computer system -
  
  • The processor and
    
  • The memory module.
                      
• The third key component of a computer system is a set of I/O modules
               
• Each I/O module interfaces to the system bus and controls one or more peripheral devices.