What is an oscilloscope? Well, it's an electronic instrument that produces traces of color on a cathode-ray tube that corresponds to oscillations of voltage and current. Check out this video to learn how to make the world's simplest scilloscope. The best part? You can do it in five minutes.
Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check our list of supported iPhone and iPad models, then follow our step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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