The Space Wire protocol is a intra-satellite communication protocol. It allows different components of spacecraft to communicate with each other.

An ASIC is a custom chip, designed for a specific purpose.

A Latching Current Limiter is a resettable fuse, an electronic component that detects over-current events, and interrupts the flow of current, preventing damage to downstream components.

An FPGA is chip where instead of re-programming the firmware, the actual layout of the gates can be re-programmed. This makes it possible to implement logic that runs significantly faster than what can be achieved on a micro-controller.

A single-event latchup is a radiation-induced failure in which a transistor allows excessivve current to flow, potentially damaging connected components.

A single-event transient is is a radiation-induced failure, where a high-energy particle causes an electrical pulse inside a device. Unlike a single-event latchup, it is temporary, and causes no damage to the device.

A Single-Event Upset (SEU) or Single-Bit Upset (SBU), is a radiation-induced failure, where one or more values stored in memory are corrupted.

A multiple-bit upset is a single-event upset that affects multiple memory bits.

A parity bit, or check bit, is added to a data stream as an error detection and correction code.

Synonym of EDAC.

An error-correction and detection code, or error correcting code, is a mechanism to detect and correct memory errors.

RTEMS is a Real-Time Operating System commonly used in ESA missions. It is the only _Space Qualified_ operating system approved by ESA.

A real-time operating system ensures that tasks executed at consistent times, with minimal jitter.

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

The European Space Agency (ESA) is Europe's gateway to space. Its mission is to shape the development of Europe's space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.

Component of space craft that manages power distribution throughout the spacecraft.

The On-Board Computer is the heart of the space craft, it is the main computer, it commands the operation of the sensors, actuators, and payloads of the spacecraft.

The main computer of an instrument or payload.

Triple-modular redundancy is a form of spatial redundancy in which logic is replicated three times, and their outputs are compared in a comparator.

The Consultative Committee for Space Data Systems (CCSDS) is a multi-national forum for the development of communications & data systems standards for spaceflight.

The European Cooperation for Space Standardization is an initiative established to develop a coherent, single set of user-friendly standards for use in all European space activities.