Real Time Web Application

Question

Hi friends i am new to ASP .net Web Development. I am planning to develop a web application which will display the real time ( string of data updated every 1
sec). The server will have input of the data . Web server will read this data and display it in browsers in every sec update rate. how may it be possible plz suggest any solution. I have worked on database web application but not have any idea about real time application in ASP .net