According to the passage, how can computer programs copy the functioning of the brain?

Directions: Read the passage carefully and answer the following question.

Ever since machines were invented, scientists have dreamt of making them learn and perform intelligent tasks – like humans. Artificial intelligence is a branch of science which is into making machines think like humans. These machines, or computers, can store large amounts of information and process them accurately and at an amazing speed. What they lack is an ability to learn and make ‘intelligent decisions’.
Scientists are creating new software programs which try to recreate the process of human learning in a computer, in an attempt to make them ‘think’. These programs try to copy the functioning of the brain. One such program is called a neural network. A neural network is a copy of the brain’s functioning inside a computer, using a software program. It can be taught to recognise patterns. In fact, when it is trained, it can classify and identify patterns in a large amount of information. It can do all this at very high speeds and sometimes faster than humans. This throws open innumerable possibilities.