Latency - definition

Latency is a technical term referring to the time delay between the initiation of an event and its actual effect in a technological, IT, or transmission system. In the context of data processing, latency denotes the time elapsed from the moment a signal, request, or piece of information is sent until the system responds to that event or delivers a result. Latency is typically measured in milliseconds (ms) or microseconds (µs), depending on the application and required measurement precision.

In computing systems, latency occurs at various levels—from access to random-access memory and instruction processing in the CPU, to data transmission over local and global networks. High latency can significantly degrade system performance, causing delays in user interface response, audio and video transmission, device synchronization, or packet delivery in networks. In real-time applications such as machine control, voice communication, or online gaming, low latency is crucial for maintaining fluidity and correct operation.

Latency is distinct from bandwidth, which measures the volume of data transmitted per unit of time, while latency describes how quickly data begins to arrive after being sent. It can be fixed or variable and may stem from physical properties of the transmission medium, software delays, buffering, protocol stack processing, or system overload. In electronic systems engineering and computer science, accurate latency determination enables optimization of algorithms, hardware architectures, and network topologies.

Measuring and analyzing latency is essential for performance diagnostics and verifying system compliance with technical requirements, especially in critical environments where every millisecond may affect service quality, operational safety, or system efficiency.

Transfer Multisort Elektronik (TME) is one of the world’s largest global distributors of electronic components, electrotechnical parts, workshop equipment, and industrial automation. The catalog includes over 1,500,000 products from 1,300 leading manufacturers. TME’s modern logistics centers in Łódź and Rzgów (Poland), with a combined area of over 40,000 m², ship nearly 6,000 packages daily to customers in more than 150 countries.

TME also invests in the development of knowledge and skills of young engineers and electronics enthusiasts through the TME Education project, and supports the tech community by organizing the TechMasterEvent series, promoting innovation and experience exchange.