Emitter resistance as viewed from base

Two engineers from Cornell have combined the functionalities of a wireless pen drive with a biometric data security system, can they make it commercially viable?

In this article, we'll delve into amplitude modulation and what it's used for. Also, we will differentiate between communication methods that do and do not use modulation.

Part 1 in the “How to Make an EFM8-Based Sound Synthesizer” series, which will design a sound synthesizer that can play standard musical notes. We will accomplish this using a low-cost, small-form-factor EFM8 microcontroller in conjunction with a few external components and a speaker.