SECOND CLASS

BUS NETWORK

Data transmission, digital transmission, or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibres, wireless communication channels, and storage media. The data are represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal.

 Data transmission circuit

• Simplex
• Half-duplex
• Full-duplex
• Point-to-point
• Multi-drop:

  

  MESH NETWORK

  • Bus network
  • Ring network
  • Star network
  • Mesh network

  

  RING NETWORK

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

  
  

  

  STAR NETWORK

  • Wireless network
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  

  WIRELESS NETWORK