hi,

The full form of TGT is Trained Graduate Teacher. TGT is a term for a teacher whose teaching training has been completed.  kvs TGT Teacher Eligibility Criteria is as follows:

A Bachelor’s Degree or equivalent from a recognized University with 50% marks or above in aggregate as well as in the concerned subject comprising the combination, for tgt maths- bachelors degree in mathematics with any two of the mentioned subjects, physics, chemistry, computer science, electronics, statistics.

so you can take subjects which is related with your graduation course like maths, physics etc. also IT depends on the institute and their recommendation of streams.