The blocks can be joined together to form circuits, with magnets in the blocks mating with screws in the motherboard to hold everything together and make electrical contact between the parts.

Figure 1 Digital logic ground symbol seen in most schematic diagrams. These seemingly conflicting ... connection between all of the components in a circuit and you should never design it into a board.

Two lamps connected in series with an open switch and a cell The circuit diagram shows a circuit with two lamps connected in series. If one lamp breaks, the other lamp will not light. The current ...