Brief history of OSs evolution (2)

from mid '70 to mid '80 a new generation of young programmers (or call them just hackers :) write a lot of new OSs, PCs are not anymore just for fun... the computer market ask for some standardization (CP/M, DOS, ...) to facilitate the production of commercial software Xerox PARC has the idea of grafical interface (desktop metaphora, mouse) and Apple (1984) creates the Macintosh immediately after Microsoft develop Windows as a GUI for DOS