Whiteboard vs Electronics Toolbox

The Whiteboard App always adheres to the concept of "simplicity to the extreme" and "Nothing more Nothing less". Despite offering many small tools, its interface remains simple and user-friendly. This app is suitable for various scenarios, including teaching, creativity, meeting presentations, prototype design, and learning drafts, among others. It provides users with a variety of universally applicable paper formats, objects, and prototype designs to choose from. It also offers instant drawing of geometric shapes, making teaching, creativity, and on-site communication more convenient. Additionally, it can be used for students' homework drafts, doodling, note-taking, temporary notepads, word dictation, and math problems, among other purposes. Users highly praise its simple and easy-to-use button layout and tool exit mechanism. The app offers two forms of creating new files, allowing users to choose the one that suits them best: - The first form is a multi-page file (Pages), where each page serves as a canvas with size limitations, similar to a PDF file. This makes it easy to organize knowledge. - The second form is a free-form file (Free Form), where a file consists of one infinitely large canvas without boundaries. This allows for unlimited creativity. The app also supports direct import of PDF files, even large files with hundreds or thousands of pages, without crashing. It opens instantly. Features: - Small storage space - Simple operation - Clean interface - Quick startup - Rich functionality Welcome to download and experience the Whiteboard App as soon as possible! Contact information: - Twitter: chenlidongorg - Threads: chenlidongorg - WeChat: ichenlidong - Email: chenlidong@gmail.com - Official website: whiteboardapp.org End-User License Agreement (EULA): http://whiteboardapp.org/TermsofUse Privacy Policy: http://whiteboardapp.org/fsaf-88bdbc6b

Electronics Toolbox is your go-to app for quick, reliable electronics calculations.
What sets it apart? Most of the included calculators can instantly generate LTspice test circuits and components—so you can validate results right away and drop subcircuits directly into your own designs. Main features: * Ohm’s Law, dB, V Peak / V RMS * Resistors (parallel, color code, best combination) * Voltage Dividers (with LTspice test circuits) * LED Resistor, Capacitors in Series, Capacitance Converter * RC & RL Time Constants (with LTspice test circuits) * Op-Amp circuits (inverting, non-inverting, difference, Howland) (with LTspice test circuits) * Instrumentation Op-Amp circuit (with LTspice test circuit) * Filters: RC / RL / RLC Low-Pass, High-Pass, Band-Pass, Band-Stop (with LTspice test circuits) * NE555, LM317, Wheatstone Bridge (with LTspice test circuits) * Common Emitter BJT amplifier (with LTspice test circuit) * Junction temperature and heatsink calculations * AWG Conversion Whether you’re a student, hobbyist, or professional, Electronics Toolbox makes design work faster, easier, and more accurate. Not endorsed or sponsored by Analog Devices.