Hi,

BSC computer science is a non technical course while BCA is a very technical course so after doing the BCA you would get a job easily rather than getting a job after doing BSc,after doing Bsc you can either do MCA or MSc but after doing BCA you are only eligible to do MCA so you should keep that in your mind also, furthermore it really depends on if you want to get in the technical side( do BCA) or in the teaching side(BSC).