30 years ago IBM announced its first personal computer
On August 12, 1981 IBM announced the release of its Personal Computer, identified as model 5150. This expression, as well as microcomputers and home computers, had already been used before so you could say that actually the first personal computer was the Xerox Alto in 1973 or even the Olivetti Programma 101 about a decade earlier. The success of the IBM PC however was such that within a short time the expression personal computers started identifying a model compatible with the IBM one.