Professor Vaidyeswaran Rajaraman, the pioneering computer scientist, visionary educator, and one of the chief architects of computer science education in India, passed away on November 8, 2025, in Bengaluru. He was 92.
Born on September 8, 1933, in Erode, Tamil Nadu, Professor Rajaraman’s life traced the remarkable arc of India’s scientific and technological evolution. From the analog computing laboratories of the 1950s to the supercomputing centers of the 21st century, his work helped lay the intellectual and institutional foundations of India’s digital era.
Educated at St. Stephen’s College, Delhi, and the Indian Institute of Science (IISc), Bengaluru, he went on to earn advanced degrees from MIT and the University of Wisconsin–Madison, where he completed his PhD in 1961. Returning to India soon after, he joined the Indian Institute of Technology Kanpur (IIT Kanpur) as one of its earliest faculty members—at a time when computing was still a nascent discipline worldwide.
At IIT Kanpur, Professor Rajaraman spearheaded the establishment of India’s first academic program in Computer Science, developing both the curriculum and the computational infrastructure that would train generations of Indian engineers. His leadership and foresight transformed IIT Kanpur into the cradle of computer science education in India, nurturing the country’s earliest cohorts of computing professionals.
Remembering him, IIT Kanpur paid a heartfelt tribute on X (formerly Twitter):
“A visionary educator, researcher, and pioneer, Prof. Vaidyeswaran Rajaraman will always be remembered as one of the foremost architects of computer science education in India. Joining IIT Kanpur in 1963 as a faculty member in the Department of Electrical Engineering, he played a pivotal role in shaping the institute’s early computing curriculum. In 1965, with the encouragement of Prof. H. K. Kesavan and in collaboration with his colleagues, he launched an M.Tech. programme with Computer Science as an option — the first time the subject was introduced as an academic discipline in India. His foresight and leadership were instrumental in laying the foundation for computer science education in the country.
A recipient of the Shanti Swarup Bhatnagar Prize, Om Prakash Bhasin Award, Homi Bhabha Prize, and the Padma Bhushan, Prof. Rajaraman was a mentor who inspired countless students and colleagues through his humility, clarity of thought, and passion for teaching. As the institute mourns the loss of Prof. Rajaraman, we also celebrate a life devoted to knowledge, innovation, and the pursuit of excellence — a legacy that continues to illuminate India’s scientific and technological journey.”
Generations of Indian students learned computer science and programming from his lucid and affordable textbooks at a time when foreign titles cost $30–$50. Reflecting his philosophy of accessibility, he once told Shivanand Kanavi, Adjunct Faculty at NIAS:
“I was not interested in making money, so I told the publisher the price should be lower than photocopying the book.”
In 1982, Professor Rajaraman joined the Indian Institute of Science (IISc), where he later headed the Supercomputer Education and Research Centre (SERC). There, he guided research in high-performance computing and contributed significantly to India’s indigenous supercomputing initiatives.
A prolific author and lifelong teacher, Professor Rajaraman wrote over twenty widely used textbooks on programming, computer architecture, and systems design—works that shaped the learning journeys of countless students across India and beyond.
For his monumental contributions, he was honored with numerous accolades, including the Shanti Swarup Bhatnagar Prize (1976) and the Padma Bhushan (1998). He was a Fellow of the Indian Academy of Sciences, the Indian National Science Academy, and the Indian National Academy of Engineering, among others.
Beyond his technical brilliance, Professor Rajaraman was admired for his humility, intellectual clarity, and lifelong commitment to teaching. He saw education as a force for national transformation, believing that the democratization of computing knowledge was essential to India’s progress.
In his passing, India has lost not only a scientist but a teacher of teachers—a visionary who saw in the logic of code and circuits the promise of a self-reliant nation.
He is survived by his family, former students, colleagues, and an enduring legacy that continues to define the contours of India’s computing landscape.
May his memory continue to inspire all who strive to build, teach, and innovate for a better digital future.
