ElectroDroid is a very popular Android application for learning various electronic devices in a circuit, developed by Demetrio Iero from Italy. It is very professional and powerful, provides you with a variety of circuit related information query and calculation services, and comes with a comprehensive database on electronic components. Therefore, it has been regarded as one of the essential tools for employees in electronics related industries.

The unique functions or statements of MySQL are quite rich, the reason MySQL in a Nutshell, 2nd Edition is valuable is it makes the reader quickly find the desired nuts and bolts, no matter they are SQL keywords or MySQL command line options, specific API information or management utilities.