He had a wide readership, and served for a brief period as the editor of Kumudam, and has also written screenplays and dialogues for several Tamil films.
His identification with the masses, and his uncanny adoption of their way of talking, behavior, mindset and slang, helped make him popular across multiple demographic segments.
His popularization of technology was one of his greatest contributions – starting with his Silicon Chip writing in Dinamani Kadhir and Yen, Yedharku, Eppadi in Junior Vikatan.
At one point, his writings were appearing in numerous Tamil weeklies and journals simultaneously, including Ananda Vikatan, Kumudam, Kungumam, Kalki and Dhinamani Kadhir.
He began to spend more time reading, especially old rare Tamil literature and writings on the latest developments in information technology and computing.
Sujatha Rangarajan was born in Triplicane, Chennai but spent his childhood in Srirangam near Tiruchirapalli under the care of his paternal grandmother owing to his father's frequent transfers in his job.
Sujatha wrote a number of sci-fi stories in Tamil and sought to explain science in simple terms to the layman.
His science FAQ has been released as separate books called Yen Etharku Eppadi and Athisaya Ulagam by Vikatan Publications.
Sujatha, who had been suffering from diabetes and had undergone a bypass heart surgery, died of multiple organ failure at Apollo hospital.
He was also a co-producer for the banner Media Dreams, which went on to produce the critically acclaimed Bharathi, a biopic of the great Tamil poet Bhaarathiyaar.