Dr.T. Theagarajan, M.E., M.Sc (IT)., Ph.D is currentlya Professor at National Institute of Technical Teachers Training and Research,Taramani, Chennai-600 113. From 1975 to 1977 he has worked in BharatElectronics Ltd., Bangalore in its R & D department. From 1977 to 1979 hewas a teaching faculty in Alagappa Chettiar College of Engineering, Karaikudi.He was with the Humberside University, England for one and half years. Hispresent assignment keeps him busy in teaching electronics and mediadevelopment. His primary research interests are in Microprocessors andMicrocontrollers, Electronic Instrumentation and Multimedia development.