How did entrepreneurs create the computer boom of the 1980s

They buy and sell, they sell customized computer to users. Dell as an enterpreneurs started by buying up remaindered outmodel computers from local retailers, upgrade them package them and make them look reusable and from there he started selling. Over the year they begin to buy parts of computers and start assembling them from where the made computer more available and people can buy. The boom was created by being creative, having an entrepreneur mind set, packaging and rebranding.