Freeware: Circuits

	QCADesigner  License: Freeware
	QCADesigner is a CAD tool for quantum-dot cellular automata (QCA) circuits. The powerful CAD features and simulation engines allow for rapid design, layout, and simulation of QCA circuits and systems. QCADesigner has most of the standard computer aided design features required for the advanced design and analysis of QCA circuits. These include block import and export, no limit on number of QCA cells, and graph output for easy analysis. QCA is an emerging nano-technological concept which has applications in future computers, where low power and high circuit densities are important. Author: University of Calgary ATIPS Lab| Date: 02-12-2004 | Size: 2014 KB
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	AUTOSIM  License: Freeware
	A simulation of a NYC Transit Authority train traveling by automatic signals with working stop arms. Working circuit drawings show how the signal system relays function while the train passes over track circuits. Good learning tool. Real photos used in the program design. Author: BREAKTRU SOFTWARE| Date: 07-11-2008 | Size: 2986 KB
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	BREAKTRU AUTOSIM  License: Freeware
	A simulation of a NYC Transit Authority train traveling by automatic signals with working stop arms. Working circuit drawings show how the signal system relays function while the train passes over track circuits. Good learning tool. Real photos used in the program design. Author: BREAKTRU SOFTWARE| Date: 22-02-2004 | Size: 2986 KB
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	Colors Builder  License: Freeware
	Program "Colors Builder" is intended for creation of harmonious color circuits for web-site and formation of sets of palettes for web-design. Opportunities of a choice of primary colour from a palette of colors are included in the program: using Windows dialogue, from scale of the colors generated by the program and "manual" input hexadecimal HTML codes of color. The program visually allows to select color scales from chosen (primary) colour with smooth transition from one color to another and to determine their six-digit hexadecimal codes. In the program the opportunity of preservation of the received color circuits is stipulated as: TXT a file and its viewing in the text editor; HTML a file and its viewing in the browser; copying of codes of colors in a clipboard. The program will be useful to web-designers and to programmers. It has intuitive - understandable interface, without installation. Author: SoftHolm Inc.| Date: 05-12-2004 | Size: 183 KB
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	Electronics Mech Maths and Computing  License: Freeware
	Electronics - DC Current flow - Basic Electronics - Resistor Value Test - Simple DC Circuits - Types of Switching - Variable Voltages - Ohm's Law - DC Voltage - DC Current - Series/Parallel Resistors - AC Measurements - AC Voltage and Current - AC Theory - RCL Series Circuits - RCL Parallel Circuits - Capacitance - Capacitors - Inductance - Inductors - Impedance - Radio and Communication - Attenuators - Passive Filters - Active Filters - Oscillators - Circuit Theorems - Complex Numbers - Electrical - DC Power - AC Power - Silicon Controlled Rectifier - Power Supplies - Voltage Regulation - Magnetism - Transformers - Three Phase Systems - Energy Transfer and Cost - SemiConductors - Atomic Structures - Diode Theory - Diode Applications - Transistor Theory - Bipolar Transistor - Transistor Configurations - Active Transistor Circuits - Field Effect Transistors - Basic Operational Amplifier - Op-Amp Theory - Op-Amp Applications - Sum and Difference Amp - Testing - Analogue Multi-meter - Measurement -Mathematics - Number Systems - Number Conversion - Number Types - Roots - Angles and Parallels - Triangle Ratios - Triangle Angles - Percentages - Ratios - Fractions - Vectors - Circle Angles - Algebra Rules - Algebra - Mathematical Rules - Powers and Indices - Simplifying - Equations - Graphing - Slope and Translation - Curves and Angle Conversion - Personal Finance - Mechanics - Area - Surface Area and Symmetry - Volume - Compound Measures - Geometry - Motion - Optics -Computing and Logic - Hardware Devices - Data Structures - Data Files - Computer Systems - Data Handling - System Development - Computer Programming - Data Analysis - Binary Numbers - Binary Arithmetic - Digital Techniques - Logic Gates 1 - Logic Gates 2 - Logic Families - Flip Flops - Combinational Logic - Counters - Counting - Shift Registers - Logic Interfacing - 555 Timer - Boolean and DeMorgan's - Microprocessors - Micro-Computer - Data/Address Bus - A.L.U - Clock and Reset - Instructions and Control Author: eptsoft| Date: 01-01-2007 | Size: 6650 KB
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	Circuit Weaver  License: Freeware
	Circuit Weaver is a completely original game in which you move your energy mass around a circuit by rearranging the circuit elements. The energy mass will follow the paths you create for it, activating "Zero Power" chips as you lead the mass to them. You have to make sure you don't lead the energy mass off the circuit board, and that you don't send it into energized circuitry to survive this game. To make things even more interesting, you'll be preserving a fine balance as you will need to use energy to rearrange the circuit board, and will also gain some energy as you send your energy mass on its way. As you get to higher levels, a time factor will be introduced into the game by having a real time enemy follow you around. As you progress through the levels, yet another puzzle aspect will present itself into the game, as you will need to maneuver your energy mass, while avoiding its on trail (energized circuits). This situation creates yet another puzzle element that resembles that which you get in a game like Tron, or Light Cycle. A fun, and fast paced puzzle game that offers many puzzle, and even real time aspects that will keep you entertained for days, even weeks! Author: best3dgames.net| Date: 18-06-2006 | Size: 518 KB
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	Atanua  License: Freeware
	Atanua is a real-time logic simulator designed for educational use. It has an intuitive, OpenGL accelerated user interface, with which the user can place components and wires. Components include all common logic blocks, including gates, latches and flipflops. Additionally Atanua simulates about 30 different 74-series chips, as well as an 8051 microcontroller variant. Simulated and pure logic parts can be mixed in the same circuit. On the I/O front, Atanua includes several different frequency clock inputs, constant level inputs as well as buttons that are bound to the user's keyboard. LEDs in various colors as well as 7-segment displays are also included. There is also a simple logic probe for debugging. The simulated parts are designed to resemble their real-world counterparts, which is more attractive for the students than pure schematics. The students can practice lab experiments using the simulated chips. The simulation shows the signal state of each wire in real time. In addition to high and low signal level, parts may output "invalid" signal, stating that there is a problem with the circuit, such as outputs connected together, or missing wirings from some chip. Additional parts can be made using the plug-in interface. As an example plug-in, a driver for the Velleman K8055 USB experiment board is provided, with which the user can mix simulated and real-world components. An anti-cheating tool is also available for teachers who wish to use Atanua for homework. Author: Jari Komppa| Date: 27-03-2008 | Size: 1598 KB
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