Proposed is a training and simulation device for electric functional processes in electric, electromechanical and electrofluidic systems, with a controller (14) for the simulation and visual reproduction of system components (25-31) on a display (11), and with electric terminals (13) located adjacent to the display (11) for cable connection to hardware components of the system, wherein optical inputs and/or outputs of the simulated system components on the display (11) are assigned to at least a part of the terminals (13) and wherein the controller (14) comprises means for generating electric voltages at the terminals (13) of assigned outputs of the simulated system components (31) and/or for generating reactions of the simulated system components (25-30) in dependence on voltages externally applied to terminals (13) assigned to inputs of said simulated system components.

An educational kit for teaching kids/beginners about designing electronic circuit is provided. The educational kit according to the current application comprises of; 1) a square hard board that is comprises of; a face board made of stiff non-conductive material, including but not limited to, plastic such as PVC (Poly vinyl chloride), wood, paper hard board, etc.; a brim made of the same material of the face board with 3 mm thickness and 2.5 cm width and a steel plate adhered to the back side of the square board with glue, 2) pluralities of various kinds of electronic components, such as resistor, capacitor, etc., which have wire type leads/terminals (5) for connection, 3) pluralities of small permanent magnets (4) of circular shape, 4) a part box (1-2) that holds the electronic components and the small permanent magnets, and 5) a separate manual (6) wherein various electronic circuits are printed. Pluralities of dents of circular shape and square shape are developed on the face board to receive magnets and electronic components, respectively. Another embodiment of the hard board is comprised of; a back board made of stiff non-conductive material of 3 mm thickness; a steel plate adhered on the back board; a paper face sheet (2) whereon pluralities of square shape spaces (8), which is surrounded by narrow non-conductive material, are developed throughout the paper face sheet (2) and adhered on the steel plate; and a brim (1-3) made of plastic, such as PVC, PMMA (Poly-methyl methacrylate), and surrounding the paper face sheet (2), with 3 mm height and 2.5 cm width.

A breadboard includes a panel having a top side and a bottom side, a first and second plurality of spaced component receiving openings extend through the top side surface and communicate with a larger first and second terminal receiving open surfaces extending from the bottom side surface which are configured to receive a first and second conductive terminals, respectively, and on a side of at least one of the first and second plurality of spaced openings in the top side surface is formed a raised surface and spanning a length approximate the larger terminal receiving open surfaces and parallel thereto and which forms part of the top side surface thereby defining a row of said plurality of spaced component receiving openings in which the conductive terminals lie.

In accordance with the various embodiments disclosed herein, an improved electrical connector footprints, such as printed circuit boards (printed circuit board), is described comprising one or more of, for example, a first linear array containing at least a first anti-pad extending along a first direction, a first electrical signal trace extending along the first direction and spaced from the first linear array along a second direction that is perpendicular to the first direction, a group of ground isolation vias containing at least one electrically conductive ground via arranged along a line extending parallel to the first direction and spaced from the first electrical signal trace along the second direction, and a second linear array containing at least a second anti-pad extending along the first direction spaced from the group of ground isolation vias along the second direction.

A reconfigurable puzzle for providing education, therapy, and entertainment is disclosed. The reconfigurable puzzle comprises a set of individual puzzle pieces with reconfigurable electronic display screens on at least one side, wherein one individual puzzle piece is mechanically connected with a connecting puzzle piece along one of the four surface areas using one or more mechanical connectors. Each of the at least one display screen of each individual puzzle piece is reconfigured to display parts of an image. Each individual puzzle piece comprises a processing unit having at least one wired interface including at least two wires. The processing unit is configured to transmit and receive data via the at least two wires of the at least one wired interface. Further, the display screens are aligned in a correct pattern configured to display a composite image of the individual images on the display screens of the individual puzzle pieces.

A self-locking portable power distributor for breadboards has a power input, and a power output with two conductive lines, configured for supplying voltage and ground to at least one breadboard. The distributor includes at least one three-dimensional connection element located on a distributor first outer surface such that the distributor three-dimensional connection element is shaped and dimensioned to be compatible with at least one three-dimensional connection element of the breadboard. The breadboard three-dimensional connection element may be located on a breadboard first outer surface disposed substantially perpendicular to a breadboard second outer surface. The second outer surface of the breadboard may carry at least one electronic component terminal socket. The distributor three-dimensional connection element may be configured for engaging with the breadboard three-dimensional connection element for allowing side-to-side connection of the distributor to the breadboard with respect to the at least one electronic component terminal socket.