A denshi block (or electronic block; the name "denshi" is Japanese word for "electronics") is a small

plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptab ...

box containing an

electronic Electronic may refer to: *Electronics, the science of how to control electric energy in semiconductor * ''Electronics'' (magazine), a defunct American trade journal *Electronic storage, the storage of data using an electronic device *Electronic co ...

component. The blocks are used in some

education Education is a purposeful activity directed at achieving certain aims, such as transmitting knowledge or fostering skills and character traits. These aims may include the development of understanding, rationality, kindness, and honesty. Va ...

al electronics kits, such as the Gakken EX-150, to allow

experiment An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into Causality, cause-and-effect by demonstrating what outcome oc ...

s to be performed easily and safely.

Description

The size and shape of denshi blocks depend on the kit they are from. The blocks of a particular kit will have the same height, usually a few centimetres, and cover a square or rectangular area a few centimetres on either side. They are designed to fit into a grid of squares, so blocks always occupy some rectangular area of these squares, with the majority of blocks occupying just one square. Most blocks contain either a single electronic component, for example a

resistor A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active el ...

, just some

wiring Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. Wiring is subject to safety standards for design and installation. Allowable ...

or both. Some unusual blocks contain complex

circuitry An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electrical ...

, for example, a

sound In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...

synthesiser in the Gakken EX-System or a

microcomputer A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor. The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (PC ...

in the Gakken FX-System. Usually, a

schematic A schematic, or schematic diagram, is a designed representation of the elements of a system using abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details that are not relevant to the key information the sc ...

representation of the block's contents is printed on its top. On the sides of each block are

conductive In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. Electric current is gener ...

metal A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typicall ...

strips, so that when two blocks are placed side-by-side, their metal strips touch allowing

electricity Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...

to flow between them. A circuit is built by placing a configuration of denshi blocks in a two dimensional grid. The instructions for building the circuit need only illustrate where to place the blocks in the grid. Because of the two dimensional layout and the labels on the blocks, a configuration of blocks resembles a schematic of the circuit.

External links and references

*
Denshi Blocks Mfg. Co. Ltd. Home Page
*

* Dostál, J
Electronic kits in education.
Olomouc, EU: Votobia, 2008. 74 s. . Educational toys {{Toy-stub