Central Processing Unit CPU is considered the brain of computer system. It is sometimes referred to processor or microprocessor. It has the responsibility to supervise the entire computer operations. This central processor execute the instructions made by users but also control primary and secondary storage of data and control functions of all attached devices.
Since 2013, Tianhe-2 is consecutively the most powerful computer in the world on top500 list of the world’s most powerful supercomputers Titan - Cray XK7 was launched on October 29, 2012 by Cray Inc. and added to top500 list in November, 2012
We are surrounded by computer world. It is impossible to live without all these computer gadgets like computers, laptops, mobile phones whether at home, office or while traveling. When a common man thinks of it, it is personal computer i.e. desktop or laptop. However, computer have different shapes and sizes and perform different functions.