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Glossary / Dictionary

Glossary of terms and definitions for IT (Information Technology), the Internet and cyber security.

This glossary provides more than 480 clear and concise definitions of commonly used terms in the fields of information technology, the internet, and cyber security. It is designed to support users of all levels in understanding key concepts, technical jargon, and acronyms frequently encountered across digital platforms and security-related discussions. Whether you are a business owner, student, professional, or simply interested in the digital landscape, this resource aims to enhance your knowledge and confidence in navigating the ever-evolving world of technology.



PSU (Power Supply Unit)

A hardware component that converts electrical power from an outlet into usable power for a computer's internal components.

Example: The PSU failed, causing the computer to shut down unexpectedly.

See also: UPS, Hardware