Multiple computer networks and intercomputer communication

There are many reasons for establishing a network which allows many computers to communicate with each other to interchange and execute programs or data. The definition of a network within this paper will always be that of a network between computers, not including the network of typewriter consoles surrounding each computer. Attempts at computer networks have been made in the past; however, the usual motivation has been either load sharing or interpersonal message handling. Three other more important reasons for computer networks exist, at least with respect to scientific computer applications. Definitions of these reasons for a computer network follow.