Glossary: IT terms explained simply!

The limitless digitization and global networking brings with it a multitude of new technical terms that we often can no longer avoid. For this reason, You will find simple explanations of the most relevant technical terms related to the topics I deal with in my blog, my videos on YouTube, projects and of course the Linux and open source world in my glossary.

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CAD (Computer-aided Design)

The abbreviation CAD stands for „Computer-aided Design“. In concrete terms, working with CAD software means that individual steps in the design process are no longer carried out manually, but are taken over by the computer.


A community usually refers to a virtual community or an association of Internet users who exchange information on online platforms specially set up for this purpose. Within the web community, for example, communication takes place via e-mail, chat, newsboard, file sharing network, instant messenger, forums, matchmaking.


The DPMAregister contains information on registered trademark names in each area and helps you to check the current status (registered, pending, canceled) of a trademark. This query can be narrowed down very well with three entries and thus made more efficient in relation to teaching materials. On the one hand, the decisive factors are the brand name in question, the type of brand and in which area (Nice Class) the brand should be registered.

Free Software

The term Free Software was coined in 1986 by the Free Software Foundation (FSF). Free software offers a number of technical and practical advantages for both users and developers. At its core, Free Software is about user freedom, not price.

Linux (Kernel)

In general parlance, Linux is often used as a synonym for GNU/Linux distributions. But actually, Linux is „only“ the kernel, i.e. the core of the operating system. This core represents a switching interface between the hardware of the computer and the software. The kernel is therefore the most elementary and most important part of a Linux system. As a user, you rarely come into contact with the kernel itself.

Identity Security

Identity security, or identity-based security, is a type of security that focuses on accessing digital information or services based on an individual’s authenticated identity. It also ensures that users of these digital services are entitled to what they receive. The most common form of identity-based security involves signing up for an account with a username and password. However, the latest technology has evolved into fingerprinting or facial recognition. And the use of so-called security keys such as the YubiKey are also included.

Sustainable IT

Sustainable IT or Green IT refers to measures that try to make the manufacture, use and disposal of IT devices and services environmentally friendly and resource-saving. You can also find more about this topic on the official website of the Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection.

Sofware Developer

A software developer designs, implements and maintains software and applications. Most developers have specialized in certain programming languages and sometimes also in certain operating systems and platforms. Because the development process has long since included not only programming itself, but the application must first be designed and planned. This includes, for example, testing the software.


Virtualization is the abstraction of physical IT resources such as hardware, software, storage and network components. The aim is to provide these resources on a virtual level and to distribute them to different customers flexibly and according to their needs. This should ensure improved utilization of IT resources.

Wine (Wine Is Not an Emulator)

Wine (originally an acronym for “Wine Is Not an Emulator”) is a compatibility layer capable of running Windows applications on several POSIX-compliant operating systems, such as Linux, macOS, & BSD. Instead of simulating internal Windows logic like a virtual machine or emulator, Wine translates Windows API calls into POSIX calls on-the-fly, eliminating the performance and memory penalties of other methods and allowing you to cleanly integrate Windows applications into your desktop.

… more technical terms will follow soon!