Aerospace Instrument-Making Annotation << Back SELF-DIAGNOSTABLE THREE-CHANNEL ONBOARD CALCULATOR WITH HYBRID RESERVATION V.N. Rusanov The achievement of a fundamentally high level of reliability, fault tolerance and radiation resistance of on-board computers depends largely on the principle of construction and technical solutions in a part of a structural and algorithmic organization. This article discusses a three-channel self-diagnostable onboard hybrid reservation, capable of providing high-quality high reliability at the same time, increased fault tolerance, radiation resistance. A distinctive feature of the calculator is to preserve performance at one (any) operational channel, as well as the short-range connection time of the backup channel compared to the "cold" reservation. Keywords: on-board computer, aerospace equipment, self-diagnosis, redundancy, element base, structure, reliability, fault tolerance, radiation resistance. DOI: 10.25791/aviakosmos.3.2022.1271 Pp. 34-41.