Electronic data recorder, namely, a compact solid state data recorder; compact flight computer; computer hardware, namely, a technology package system comprised of processing cores, memory, data storage, and support peripherals for spacecraft subsystems for satellite communication; space-to-ground segment link signal processor; interface computer hardware for use between ground station transmitters, downlink receivers, and routers; computer network router, namely, a space-to-ground segment router; application server in the nature of a computer server; miniaturized end cryptographic unit, namely, a microprocessor that performs cryptographic functions; payload interface electronics, namely interfaces for computers for controlling spacecraft sensors and actuators, not for gaming devices; payload interface electronics, namely, computer network interface devices for power regulation and distribution, processing, memory, data storage, telemetry, and spacecraft sensor and actuation; payload interface electronic circuit boards; power management controller ; electronic propulsion controller for controlling spacecraft mono and bi propulsion systems; data processing apparatus in the nature of an electronic reaction wheel controller that converts signals between wheel drivers and control processors; s-band cubesat radio; single board controller, namely an electronic controller for performing generic data processing functions for spacecraft systems; space ethernet switch; space computer communications hardware that provides encryption and a secure operation gateway for satellite communication