Hello,

Computer science is a branch and robotics is a domain. Btech Computer science has syllabus for basic concepts which is root of machine for automation. It touches few parts which are advanced like DA, AI, Big Data.

Robotics is domain combination of Mechanical engineering (deals with the hardware part and smooth running), electronic engineering (deals with mother board and IC) and computer science (Deals with programming and optimization). You can opt for it as an elective in higher semester. Like 7th or 8th sem.

Later you can make your career in that field.

Hope it helps!