Electric models are used to quickly solve some economic problems. For example, the design and development of oil and gas fields is carried out by electric modeling methods. Models are successfully used for operational dispatch control of various types of networks, modeling of high-pressure gas flows in trunk gas pipelines, solving transport problems of linear programming, problems of electrodynamics, hydrodynamics, nuclear physics, etc. All these issues are covered in a form accessible to a wide range of readers. Attention is paid to the prospects for the development of electrical models, as well as analog and analog-digital computers. Designed for a wide range of engineering and technical workers.