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Trainer for the basic arithmetical calculation types. Includes four quiz modes with different levels of difficulty.

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Carries out eight-channel audio spectrum analyses in real time for measuring data from analogue-to-digital (ADC) converters of the sound card, including FFT spectrum, frequency, volume and voltage, as well as the progression of electrical voltages using an oscillograph. Fast and secure download from The H

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Ope source simulator of a simple von Neumann computer, designed for use in IT lessons. Manages machine programs and can display the functions of the processing unit, the memory and the control unit. Provides didactically simplified bus accesses and command-set extensions by editing the micro command memory via the GUI. Fast and secure download from The H

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CAD program for modelling solid geometries. Includes an interactive geometry editor and supports ray-tracing and frame buffering. Also provides image- and signal-processing tools. Fast and secure download from The H

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BOINC stands for Berkeley Open Infrastructure for Network Computing. This program allows the computer’s auxiliary computing power to be used for scientific projects in different fields (such as mathematics, medicine, astronomy or astrophysics). One of the best known projects that it supports is SETI@home.

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Mobile Android implementation of Google Sky, the online star map. This augmented reality application uses the accelerometer, GPS and compass functions to display stars, constellations, planets and galaxies in the visual field of the mobile phone camera.

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CAD application for design studios, design models and detailed designs. Includes a drag-and-drop element system and functions for modelling volume, surface and free-form surfaces. Supports 3DS, AVI, BMP, DWG, DXF, GIF and VRML formats.

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Tool for measuring the spacial coordinates and distances on digital photos. Creates texturised models and outputs them as a PDF or Collada/DAE file. Fast and secure download from The H

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Analysis and display tool for organic chemistry; has a formula editor, can calculate three-dimensional structures, perform rendering, and also export images and videos, among other things. Fast and secure download from The H

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Determines a resistance's colour code from the resistance value and vice versa; displays the closest resistance from the E series/Renard numbers. Calculates required resistance values for LED circuits.

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Gravity simulator. Allows you to create stereoscopic 3D views and includes a screensaver function. Fast and secure download from The H

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Learning program for the anatomy of the skeleton that includes a link to Wikipedia. Provides coloured 3D models of the human skeleton with descriptions of the bones in both English and Latin. Enables you to save and transfer your own skeleton views and notes. Download requires registration with the manufacturer.

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Free viewer for displaying and measuring DWG, DWF and DXF files. Offers Xref support for displaying levels and block attributes.

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IntelliCAD technology-based 2D/3D CAD tool with full AutoCAD-compatibility for creating drafts and drawings. According to the manufacturer, it’s ideal for use in mechanical engineering, architecture and for GIS users. User interface is identical to AutoCAD and has the same commands and structures. Fast and secure download from The H

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Offers graphic display and documentation of processes and procedures; based on the standard Business Process Modeling Notation (BPMN) for representing workflows. Download requires a valid email address. Fast and secure download from The H

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Converts DWG, DXF and DWF to SVG, in batches. Doesn’t require AutoCAD. Versions for converting to image, PDF and WMF files also available.

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CAD software for 2D design and 3D modelling. The range of functions includes photo-realistic rendering, advanced light effects, transparency options and camera views. Supports the current CAD graphics standards for importing and exporting data, including AutoCAD and Google SketchUp. Also available as a cut-down Deluxe version with fewer functions.

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CAD for 3D modeling and 2D drafting with ANSI & ISO dimensioning, multiple undo/redo and PDF export function. Download is only possible after registration by email which allows the developer to send the necessary password.

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Acoustic analysis tool for audio files that displays them in two and three dimensions.

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CAD suite based on the wxWidgets framework for producing electronic circuit diagrams and circuit boards with up to 16 tiers. Consists of four single tools (Eeschema for manipulating circuit diagrams, Pcbnew for configuring circuit board layouts, Gerbview for data exchange in Gerber format, and Cvpcb) as well as a basic module with integrated project administration (Kicad). Fast and secure download from The H

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