  The rapid evolution of intelligent electronic devices makes information
technology, computer science and electronics strongly related to the teaching
of natural sciences. Today almost everybody has a smart phone that can convert
light, temperature, movement, sound to numbers, therefore all these can be
processed, analysed, displayed, stored, shared by software applications. The
fundamental question is how education can follow this knowledge and how can
education take its advantages. Components and methods of modern technology are
available for education also, teachers and students can play with parts and
tools which were previously used only by engineers. A good example is the very
popular Arduino board which is practically an industrial microcontroller whose
pins are wired to easy-to-use connectors on a printed circuit board. In this
paper we show a universal system which we have developed for the Arduino
platform to support experimenting and understanding of the most fundamental
principles of the operation of modern devices. We show our related educational
concept and discuss the most important features of the system. Open source
hardware and software are available and we provide a number of video tutorials
as well.
