Surface mount device (SMD) placement to control a signal path in a printed circuit board (PCB), including: adding, to a PCB, a plurality of signal path segments, each signal path segment of the plurality of signal path segments ending at corresponding pad of a plurality of pads, wherein a first pad of the plurality of pads is couplable to a second pad of the plurality of pads to create a first signal path and is couplable to a third pad of the plurality of pads to create a second signal path; and coupling, via a discrete SMD, the first pad and the second pad to create the first signal path comprising a first signal path segment of the plurality of signal path segments and a second signal path segment of the plurality of signal path segments.

An electronic breadboard system may include a computing device including a display screen. The display screen has a first portion to display an electronic circuit model and a second portion directly adjacent to the first portion. The electronic breadboard system also includes a translucent breadboard on the second portion of the display screen. The translucent breadboard includes a translucent face plate having a rectangular grid of openings exposing a plurality of contacts. The plurality of contacts are arranged lengthwise along each row of the rectangular grid of openings and orthogonal to a transparent back plate coupling the plurality of contacts to the translucent face plate. The electronic breadboard system includes a graphics controller. The graphics controller may illuminate a row opening and/or a column opening of the translucent breadboard to direct placement of electrical components of a computer model in response to user interaction with the electronic circuit model.

This electrical connection structure for wiring boards comprises: a plurality of wiring boards which are arranged along one side of a display panel and distribute electric power and/or an electric signal for driving the display panel; and a connector which is mounted on the wiring boards adjacent to each other, and electrically connects the wiring boards via a belt-like wiring material. Terminal connecting region and connector fixing region of the wiring board are configured to enable both first mounting of the connector with a direction in which the belt-like wiring material is inserted from the display panel end and second mounting of the connector with a direction in which the belt-like wiring material is inserted from an end opposite to the display panel. Thus, the present invention provides an electrical connection structure for wiring boards, in which an insertion direction of a connector can be reversed.

A circuit board includes a substrate, an input binding region and at least two output binding regions disposed on the substrate. Each of the output binding regions includes a plurality of binding portions, and the number of the binding portions included in different output binding regions is different. The substrate is configured to output a signal received by the input binding region to respective binding portions included in each of the output binding regions.

According to one embodiment, a printed circuit board includes a base substrate, a first pad located on the base substrate, a second pad located on the base substrate alongside the first pad with respect to a first direction X with a gap therebetween and a solder resist covering the base substrate and including a cavity portion in a position overlapping the first pad and the second pad, the solder resist including a first protruding portion projecting in a second direction crossing the first direction and a second protruding portion projecting in the second direction on an opposite side to the first protruding portion, and the first protruding portion and the second protruding portion each overlap the gap, an end of the first pad on a gap side, and an end of the second pad on a gap side.

A battery charger may include a printed circuit board (PCB) having a first portion supporting alternating current (AC) electrical components and a second portion supporting direct current (DC) electrical components; an indicator including a light-emitting diode (LED) supported on the first portion of the PCB and operable to emit light; and an isolating member positioned on the first portion between the AC electrical components and the LED. A trace on the PCB may be electrically connected to the second portion of the PCB, the trace extending from the second portion and along the first portion, and the LED may be electrically connected to and receiving DC power through the trace, the LED being selectively positioned along a length of the trace. The LED may be positioned more than about 8 mm from the AC electrical components.

Systems and methods for educational electronics devices such as may be assembled by non-manufacturer builders, including by personal or hobbyist individuals and by groups such as clubs or classes. Methods and systems relate to Surface Mount Device (SMD) use, measurement systems, communications skill acquisition, physical construction of educational electronics, builder construction/configuration and maintenance of devices, subsystem componentry designed for effective use in educational electronics, circuit designs that permit individual builders to construct professional quality devices, and cognitively adapted methods and systems to optimize learning and performance during and after builder assembly.

A display device includes a substrate, a first electrode extending in a first direction on the substrate, a first partition wall extending in the first direction on a central portion of the first electrode, a second electrode extending in parallel with the first electrode on the substrate, a second partition wall extending in the first direction on a central portion of the second electrode, and a plurality of light-emitting diodes electrically connected between the first electrode and the second electrode.

This application discloses a circuit board and a manufacturing method of the circuit board. The circuit board includes a signal transmission pin pad configured to connect with signal transmission pins of an external same kind connectors to transmit a signal, and fixing pads configured to fix fixing pins of the connectors. A number, location, and size of the fixing pads are matched with a same kind connector. The same kind connector is a connector with a same number of signal transmission pins and a same distance of pins. The number of the fixing pads is greater than or equal to a maximum number of fixing pins of the same kind connector.

A plug-in connector having terminal provided in terminal receiving cavities. The terminals have memory card engagement sections. A memory card receiving slot is provided in the housing. The memory card receiving slot spans the terminal receiving cavities. A portion of the memory card receiving slot is in alignment with each of the terminal receiving cavities. An elongated opening extends between the memory card receiving slot and the terminal receiving cavities. A memory card is positioned in the memory card receiving slot. The memory card stores data which is identifiable to the specific device and allows the data to be easily conveyed.