Changing is always hard for most people. We have passed through the life stages from the child to the adult period. Just remember that when we grew from child to teenager we faced very different situation. Men often have problem with their boobs during their adolescence.

The history of the computer goes a long way back. In 1876, Charles Babbage designed a machine called the Analytical Engine, which could be programmed to perform any calculation that could be done by hand. This was the first step in the development of the personal computer (PC). However, it would take many years for this machine to be actually built. In 1937, John Atanasoff and Clifford Berry developed the first electronic computer, called the Atanasoff-Berry Computer (ABC).