Anna University Guindy campus, Anna University MIT campus, PSG Engineering college, thiagarajar Engineering college provides you an excellent bachelor degree in computer science you get a seat there through TNEA counselling. The online forms are available in the official website www.tneaonline.com, you can apply through the following URL. You can get seats in these colleges
One and only if you have high cut off marks otherwise you can opt for this colleges through management quota.

Can also get a seat in amrita engineering college in coimbatore through amrita entrance examination, VIT through VITEEE, SRM through SRMJEE

you can also write JEE mains and advanced and get qualified for seats in national institute of technology, Indian institute of information technology, Indian institute of technology etc.,

The above-mentioned colleges provide a good exposure in the field of computer science and Engineering in tamilnadu especially in Chennai