1940s - 1950s: The Development of Early Robotics Technology During the 1940s and 1950s two major developments enabled the design of modern robots. Robotics generally is based on two related technologies: numerical control and teleoperators. Numerical control was invented during the late 1940s and early 1950s. It is a method of controlling machine tool axes by means of numbers that have been coded on media. The first numerical control machine was presented in 1952 at the Massachusetts Institute of Technology (MIT), whose subsequent research led to the development of APT (Automatically Programmed Tools). APT, a language for programming machine tools, was designed for use in computer-assisted manufacturing (CAM). First teleoperators were developed in the early 1940s. Teleoperators are mechanical manipulators which are controlled by a human from a remote location. In its typical application a human moves a mechanical arm and hand with its moves being duplicated at another location.

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Internet Protocol Number (IP Number) Every computer using TCP/IP has a 32 bit-Internet address, an IP number. This number consists of a network identifier and of a host identifier. The network identifier is registered at and allocated by a Network Information Center (NIC), the host identifier is allocated by the local network administration. IP numbers are divided into three classes. Class A is restricted for big-sized organizations, Class B to medium-sized ones as universities, and Class C is dedicated to small networks. Because of the increasing number of networks worldwide, networks belonging together, as LANs forming a corporate network, are allocated a single IP number.

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