Before the introduction of the microprocessor in the early 1970s, computers were usually large, costly systems owned by large companies, colleges, or the government. Minicomputers were basically interactive and soon had their own operating systems. In 1973 the minicomputer Xerox Altowas a landmark step in the development of personal computers. With its graphical user interface, bit-mapped high resolution screen, large internal and external memory storage, mouse, and special software.
After the development of the microprocessor, individual personal computers were low enough in cost that they eventually became affordable for more people.
After the development of the microprocessor, individual personal computers were low enough in cost that they eventually became affordable for more people.
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