ABSTRACT
The development and proliferation of Control Program for Microcomputers (CP/M)-based personal computers from the late 1970s and Microsoft Disk Operating System (DOS)- based personal computers in 1981 helped in creating a single site that may support a large number of computers. The CP/M is also known as Control Program for Microprocessor or Monitor and became the rst operating system for personal computers. The DOS was written for X86 microprocessors-based PCs. The initial attraction of networking these was mainly to provide sharing for disk space and laser printers, which were both very expensive at the time. There was much enthusiasm for the concept and for several years, from about 1983 onward, computer industry professionals would regularly declare the coming year to be “the year of the local area network (LAN).”
