Born on 8 September 1933 to Ramaswami Vaidyeswaran and Sarada at Erode in the south Indian state of Tamil Nadu he married Dharma in 1964.
In early 1965, with the encouragement by Prof.H.K.Kesavan, the Head of Electrical Engineering Department at IITK, Rajaraman along with his colleagues, initiated a new MTech programme with Computer Science as an option; the first time the subject was being offered as an academic discipline in India [REF].