The Brain vs. The Computer: Similarities and Differences. The brain uses chemicals to transmit information; the computer uses electricity. Even though electrical signals travel at high speeds in the nervous system, they travel even faster through the wires in a computer. ... Computer memory grows by adding computer chips.
Throughout history, people have compared the brain to different inventions. In the past, the brain has been said to be like a water clock and a telephone switchboard. These days, the favorite invention that the brain is compared to is a computer. Some people use this comparison to say that the computer is better than the brain; some people say that the comparison shows that the brain is better than the computer. Perhaps, it is best to say that the brain is better at doing some jobs and the computer is better at doing other jobs. We now take the ten top functions and how computers hold up vs. brain in each of them. We will see that computers already win easily in two of them. There are four areas in which computers have been able to catch up in the last decade and are fairly close or even slightly ahead. Finally, there are four areas in which human brains are still holding their own, among other things because we don’t really understand how they work in our own brains.