A unified architectural diagram that contains links to different kinds of information extends the functionality of current standardized development architectural diagrams by linking information to each component of the solution. If an over-current situation is detected on the low side, powering up is prevented in order to avoid damage to the rectifier. Several devices are provided, ranging from simple striking targets to more complex musical instruments that have visually, possibly audibly, and even possibly tactilely distinct striking targets incorporated or attached thereto to accompany execution of the teaching method.