The book is devoted to a new direction - heteromagnetic microelectronics, microsystems of active type, research and development which will lead to the creation of new types of devices, CHIP’S, including intellectual. Polyvalent, multiple parameter magnetosemiconductor microsystems are described; extensive experimental and theoretical results of researches in a range of frequencies up to 1000GHz of such microsystems in active modes - generation, amplification, parametrical multiplication and division, direct multipurpose synthesis of signals on a crystal, generation equidistant grids of frequencies, reduction of noise are resulted, and applications of the above are discussed.