Communications

• ˜Computer communications describes a process in which two or more computers or devices transfer data, instructions, and information
• ˜Components for successful communications:

     Sending device : Initiates an instruction to transmit data, instruction, or information.
 Eg: mainframe, desktop,pc server                 

            

         Communication device : Device that connects the sending and receiving device to a communication channel.
 Eg: modem, network card, router, hub/switch.

         Communication channel : Transmission media on which the data, instructions, or information travel
 Eg: telephone line , cable tv.

         

          Receiving device : Accepts the transmission of data, instructions or information
. Eg: mainframe, desktop pc,                                                   server, notebook, smart phone, GPS receivers etc.