Dear aspirant

For becoming a computer engineering you need to do the course of B.Tech also known as B.E  in the stream of computer science or also you can go for information science. You can do a diploma (3 years) or a degree (4 years) course.

If you really want to become a computer engineering then I would suggest you to do degree course. For entrance in good engineering colleges you need to qualify the entrance exams. JEE is the top exam for this, other than this there are various state level exams and also exams of different universities by which you can get admission.

You need to prepare for these exams during or after +2. You need to work hard.

All the best.