A Short Book Description This paper is a scientific view, uniform, general, comprehensive and unbiased of the main problems posed by mechanical systems, mobile, serial and parallel. It gives an overview, followed by geometric and kinematic study of the serial and parallel structures. It continues with an introduction in the dynamics these systems. At the serial systems are studied both direct and indirect kinematics, while at the parallel systems is studied only indirect kinematics (this being more useful). Presentation is closely linked of the basic methods of calculating the matrix, which are introduced step by step for a easy understanding of the each sequence. The book is divided into 14 chapters, who have been based on our courses, prepared for our students of the next disciplines: mechatronics, industrial robots, manipulators, automated welding, etc.. The paper is addressed equally to all specialists and to all future specialists which are working in these areas. The book is written in Romanian.