The invention of the computer has made a revolution in the world of communication. The commonly asked question: Could the computer be compared with our brain? That should not take us with surprise because different man-made inventions have compared with the brain. In the past, the brain has been compared with the telephone switchboard. Nowadays people like to compare it with the computer. To be fair in comparison, it is best to say that the brain is better at doing some jobs and the computer is better at doing other jobs. Both use electrical signals to send messages. 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. Both have a memory that can grow. Computer memory grows by adding computer chips. Memories in the brain grow through stronger synaptic connections. The computer can do many complex tasks at the same time ("multitasking"); the brain could perform multitasking jobs at the same time. For example, the brain controls breathing, heart rate, and blood pressure at the same time it performs a mental task. Both need energy. The brain needs nutrients like oxygen and sugar for power; the computer needs electricity to keep working. Both can be damaged. It is easier to fix a computer - just get new parts. There are no new or used parts for the brain. However, some work is being done with the transplantation of nerve cells for certain neurological disorders such as Parkinson's disease. Both a computer and a brain can get "sick" - a computer can get a "virus"<br />At last, we have to be "fair "the brain has given life and existence to the computer.<br />