Generally, we all know that we are living in scientific era. Computer, tablets, I phone, laptop, malls, metro, cameras, automatic stairs and many other machines are playing a prominent role in our daily routine life. Today, we cannot imagine even a second, without these important machines.
Generally, we all know that we are living in scientific era. Computer, tablets, I phone, laptop, malls, metro, cameras, automatic stairs and many other machines are playing a prominent role in our daily routine life. Today, we cannot imagine even a second, without these important machines.
