Some features of the development of payload complex for the international university small satellite "Condor" are presented in the paper. First the composition of the payload complex and its main components are presented shortly. It is followed by the information about amount of payload and housekeeping data to be transmitted to the ground control station. The rest of the paper describes in more detail the onboard computer (its structure and main components) and onboard software. The process of the integration testing of the onboard computer and NCU-SWIP, its results and further work are described at the end of the paper.