Hello aspirant,
you can join in B.tech computer science as lateral entry after completing of diploma. as b.tech will be only for three years for the diploma holders.
There are seats available in many colleges to get direct admission in specified branch. These seats are under management quota. one should pay the management fee and the college fee so that they can get direct admission in b.tech in any branch. This management fee is different in every college.
all the best...
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