In the era of PCs, here is 1 day which has modified the computer world. It is the 4th of April 1975. Here are perhaps not lots people who are familiar with the day because it is not a public holiday and PC fans do not celebrate it at all. It is a day of establishment of Microsoft Corporation. The creators of the achievement – Bill Gates and Paul Allen have been famous universe and made many of money but what is the most influential – they have created a transformation in the computer globe and changed it for better.