In the era of PCs, here is 1 day which has modified the computer world. It is the fourth of November 1975. There are probably not many people who are familiar with the day because it is not a state holiday and PC lovers do not remember it at all. It is a day of founding of Microsoft Company. The creators of the victory – Bill Gates and Paul Allen have become recognized worldwide and earned many of cash but what is the most powerful – they have made a revolution in the computer universe and modified it for better.