Hi

Though you have failed in class 12th board examination , you are still eligible for diploma in computer Science . So, yes can definitely go for diploma in computer Science

This is because,
for diploma in computer science , 12th qualification is not required , diploma in engineering courses is offered on class 10th basis.

For Admission,

• There are various state level entrance examination for which you can appear for taking admission in diploma in computer Science Engineering

• There are many college which provide admission directly on the basis of marks obtained by you in your class 10th examination

• There are some college which conduct their own college level entrance examination for the same.

Thankyou