The first computer networks were dedicated special-purpose systems such birli SABRE (an airline reservation system) and AUTODIN I (a defense command-and-control system), both designed and implemented in the late 1950s and early 1960s. By the early 1960s computer manufacturers had begun to use semiconductor technology in commercial products, and both https://bookmarkextent.com/story11646032/internet-a-gizli-silah