Math Agility vs Digital Electronics Guide

Measure and increase your math agility with this arithmetic speed game. The rules are simple: the app will give you a math problem to solve and you have 20 seconds to do it. Sometimes the problems are easy, like 2 + 2. Othertimes they are evil and mean, like 47.1 ÷ 721 (that's 0.0653 by the way). Sounds hard, huh? It is. So the app is kind and gives you partial credit: you're graded on bell curve around the answer. This means you can be a little wrong but still get partial credit. The trick is to develop the ability to solve seemingly very difficult math problems in your head using successive approximations. First get the order of magnitude right, then the next digit, then the next. Once you develop this skill, every day problems will be a pleasure to solve and you'll be the first one in your group of friends able to split the check (sorry). This app is great for engineers, scientists, students, and the rest of us who just want to keep our brains working well. I hope you enjoy it!

Digital Electronics Guide is a powerful reference tool for electronics students, engineers, and hobbyists. Whether you're just starting out or already experienced, this app helps you design, learn, and prototype with ease. It combines essential theory with practical guides and covers key digital electronics topics, including logic gates, counters, flip-flops, and IC reference data. The app also features detailed information on popular digital IC families such as TTL 7400 and CMOS 4000 series. Perfect for quick learning or as a companion for working on electronic circuits and digital systems. Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! The app includes detailed tutorials and references for: • Basic logic • Families of digital chips • Universal logic elements • Elements with Schmitt trigger • Buffer elements • Flip-flops • Registers • Counters • Adders • Multiplexers • Decoders and demultiplexers • 7-segment LED drivers • Encryptors • Digital comparators • Astable CMOS Oscillators • Monostable CMOS Oscillators • Bistable CMOS Oscillators • Gated CMOS Oscillators • TTL Oscillators • 7400 series ICs • 4000 series ICs Whether you're learning, teaching, or building real-world digital circuits, Digital Electronics Pro is your trusted companion every step of the way.