Hey,
Bachelors of Science in Computer Science is a three year undergraduate programme which deals with Computers and related applications.
The basic eligibility criteria is to pass 10+2 with Science Subjects(PCM) from a recognised board or passed valid and relevant 3 years long Diploma courses from any recognised institute.
Therefore,you are eligible toappply for this course.
Admission is given through either Entrance Test or Merit Based.
Some of the colleges that offer this course are:
Loyola college Chennai
St.Xavier's College Mumbai
Christ University Bangalore
Miranda House College New Delhi
Hope this helps.
Good luck.