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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.
The main part of a computer that performs most of the processing by executing instructions from software and managing tasks.
Example: Upgrading the CPU improved the computer's performance.
A Heatsink is a passive cooling device made of metal, typically aluminium or copper, that dissipates heat away from electronic components like the CPU to prevent overheating.
Example: The technician installed a larger heatsink on the desktop processor to improve cooling during heavy use.
The main printed circuit board (PCB) in a computer that connects and allows communication between the CPU, memory, storage devices, and other hardware components.
Example: Upgrading the motherboard improved the computer's overall performance and compatibility.
See also: Hardware
This is a diagnostic testing sequence run by a computer's BIOS when the machine is powered on to check hardware components such as RAM, CPU, and storage devices.
Example: When a user turns on their PC and hears a single beep, it indicates the POST has completed successfully.