Hello,
Robotics has a scope in the coming future in manufacturing, marine engineering etc.It is an interdisciplinary course which comprises of Computer science engineering, electronics/electrical engineering, mechanical engineering.It needs the fundamentals of all the above mentioned disciplines so if you take up Electronics/Electrical/Computer/Mechanical in diploma and B.tech one gets exposure to the fundamentals and it will be helpful and the best when robotics is taken as specialization in PG level.