Human body is composed of Oxygen, Carbon, Nitrogen, Hydrogen and others elements. In this text, I intend to give a general idea about how complex the human brain is. The human body in itself is a very complex system, perhaps it could be due to the complexity of human brain itself. We have not reached to that level where we have complete idea about how our brain works, processes things, and controls our body to the entirety.

 Out of all organs of our brain is most complex and it is a master organ. The scientists have discovered some facts about brain but not complete as of other organs. Brain weights three pounds(two per cent of body weight) but controls whole body. We think computer to be most complex  machine . We may sometime even imagine what if our brain was like the computer. But in fact our brain is infinite and infinite times superior to the computers. Human body is developed from zygote. It is said that the development of human brain grows at the rate of 250,000 nerves cells per minute during pregnancy. From this we can know that the formation of human brain is faster and difficult. Recently scientists of Germany and Japan have invented the super computer by using 83,000 super computer's processer. It is said that this computer performs work done by one per cent of the brain for one seconds taking forty minutes. So we can imagine how superior our brain is than the computers. Our brain has 100 billions  neurons which forms billions of links which is more complex than that of the hundreds millions of transistors and circuit in today's computer.

 We may think that human brain is slower in calculation than the computers. But if we think about the work done by computer at that time and work done by brain at that time then we will definitely find brain to be superior. Let's look the work done by computer at that time of calculation. Computer is specified for doing specific work and it sends the input information to the CPU and it processes the information and gives result in a second. Now let's look at the work done by our brain. Our brain is controlling whole body and is carrying out respiration, circulation etc. It is founded that our body processes one million point images per second which is controlled in each second by brain. Our ear listens the sound which brain processes, our nose smells the air which is controlled by our brain, and likewise many activities are carried by our body under the control of brain. If we give this work to computer it takes hours and hours even to process the work done by brain in one seconds. Now we can say which is fast. Have you ever heard anyone telling how   overloaded his or her brain is? What can I do? Definitely not. But we have heard people telling their computer is overloaded so the memory of our brain is infinite and infinite but the memory of computer is limited. Our brain is superior than computer from many views so in conclusion brain is most complex machine in the world.