Modern mechanical engineering is based on the application and implementation of robots and computers in just doing the job. This can best be seen on the example of welding and CNC machines, only the operator that enters the codes, sets the workpiece, and moves it when the machine completes processing. In order for an information system to be implemented in an organization, it is necessary to invest a lot of time, effort and knowledge. The information system needs to be originally planned, analyzed and then shaped into those segments that the organization wants to achieve, after that comes the very production and testing which is very important to achieve success. The paper describes the introduction of information systems in mechanical engineering, the development of the machines themselves from their initial level to modern computer-controlled machines that are used in industry today. Also, the development of information systems is presented in order to show as clearly as possible the importance of the development of new technologies in the industry.