Hiiii

After class 12th you can choose computer science to be your career field. You have options like Btech CSE, Btech IT, BSc CS, Bsc IT, BCA at undergraduate levels.
After completing your UG course you can go for higher studies and become a computer engineer or computer scientist after doing PhD.
Incase you want to know in detail about any course, feel free to reert back.

Thanks!!