K.C. Selvam is currently working as a technical officer in the department of electrical engineering at the Indian Institute of Technology in Madras, India. He has been doing research and development work for the last 30 years and has published more than 34 research papers in various national and international journals. His book Design of Analogue Multipliers with Operational Amplifiers was also published by CRC Pressis. In 1996 he received and award from IETE for the best paper and the students' journal award of IETE in 2017. A main area of his interest relates to the design and development of function circuits to find their applications in modern measurement and instrumentation systems.