After completing class 10th you can either opt for science for 11th & 12th and after this  or You may directly select diploma in computer engineering or diploma in IT. But I want to suggest you to complete 12th first then the aea of scope will increase for you than after 10th. Still you want to do after 10th only then you can go for Polytechic courses in Computer Engineering and after completing you can go for B.tech Lateral entry programme. There are many colleges and each college has different criteria for the admission.

Good Luck!