Reference Tools for EEs

 Calculators

    Scientific Calculators

    Financial Calculators

    Binary, Octal, Decimal & Hex Calculators

    Eigenvalues/Eigenvectors Calculator

    Quadratic Equation Solver

    Solve Math Problems with instant step

       by step solution.

 Math Equations & Formulas
(from Paul Dawkins at Larmar University)

    Algebra Formulas

    Geometry Formulas (GruntWare)

    Trigonometry Formulas

    Calculus Formulas

    Derivatives and Integrals Formulas

    Laplace Transforms

 Resistor Color Codes

    4 Color Bands

    5 Color Bands

Development Tools for EEs

 Schematic and Diagramming

    EasyEDA (EasyEDA.com)

    CircuitLab (circuitlab.com)

 Spice Simulators

    EasyEDA (EasyEDA.com)

    CircuitLab (circuitlab.com)

    5Spice (5spice.com)

 PCB Layout

    EasyEDA (EasyEDA.com)

    DesignSpark PCB (designspark.com)

    SnapEDA (SnapEDA.com)