A personal computer is a multi-purpose computer that is intended to be used at home. In order for a personal computer to work, an operating system is needed that makes all the operations possible and doable.
<em>Bill Gates</em> is the principal founder of the Microsoft Corporation, which is the world's largest PC software company. He worked closely with <em>Paul Allen</em> and together they created the first computer operating system available to each individual.
<em>Steve Wozniak</em> and <em>Steve Jobs</em> were the founders of Apple, the world's largest information technology company. Their operating system is used by millions of users every day and they revolutionized the development of personal computers in the 1970's and 1980's.
Cave paintings are a source of information about the early human life. Substantiate. Cave art is significant because it was what people in prehistoric times did in order to record history and culture. From these cave art one can obtain information about the life of early human beings.
