hello

I would like to know how we can analyze the fault using

look at this pdf file

I Image 1st

Fault-free function z = AB+CD

Faulty function zf = AB

Fault-free function z = AB+CD

Faulty function zf = AB+D

Q1 how we will know that function AB is faulty and function AB+D is faulty?

Q2 how to generate test vector for this two circuit ?

I would like to know how we can analyze the fault using

look at this pdf file

I Image 1st

Fault-free function z = AB+CD

Faulty function zf = AB

Fault-free function z = AB+CD

Faulty function zf = AB+D

Q1 how we will know that function AB is faulty and function AB+D is faulty?

Q2 how to generate test vector for this two circuit ?