The National Institute of Engineering

I am not getting why you want to join NIE Mysore. Better you prepare for NIMCET for few months and clear the competitive exam. Based on your score, you will get prestigious institutes like NIT Trichy, NIT Surathkal, NIT Allahabad, etc.
Otherwise below is the detailed information:
50% Candidate must have passed any recognized BCA / Bachelor degree in Computer Science Engineering or equivalent degree and obtained an aggregate minimum of 50% marks (45% of marks in case of SC, ST and Category-I of Karnataka candidates) taken together in all the subjects in all the years of the Degree Examination from any recognized institute/university. OR Candidate must have passed B.Sc. / B.Com / B.A. with Mathematics at 10 + 2 level or at Graduation level (with additional bridge courses as per the norms of the concerned University) and obtained an aggregate minimum of 50% marks (45% of marks in case of SC, ST and Category-I of Karnataka candidates) taken together in all the subjects in all the years of the Degree Examination from any recognized institute/university. Final year students can also apply on provisional basis

1. UVCE, Bengaluru-government college
2. NIE, Mysore- nice college, good campus
3. BIT, Bengaluru- nice college, no campus
I am alumni of BIT (201014) batch EEE branch. The college is nice but due to unavailability of campus, lacks enormously in other activities like organisations of seminars, conference, ted talks, robotics competition, etc. This affects our resume alot. I am alumni of RVCE (201517) batch, M.Tech, Power Electronics. It has a very nice campus which helps students to organise innumerable conference s, talks and technological which makes their resume attractive. But whatever college you take, make sure you choose branch of your interest, after all it's for another 4years you have to study the same.