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Seven-Segment Display
In a simple LED package, typically all of the cathodes (negative terminals) or all of the anodes (positive terminals) of the segment LEDs are connected and brought out to a common pin; this is referred to as a “common cathode” or “common anode” device.Hence a 7 segment plus decimal point package will only require nine pins, though commercial products typically contain more pins, and/or spaces where pins would go, in order to match standard IC sockets. Integrated displays also exist, with single or multiple digits. Some of these integrated displays incorporate their own internal decoder, though most do not: each individual LED is brought out to a connecting pin as described.
For many applications, dot-matrix LCDs have largely superseded LED displays in general, though even in LCDs, seven-segment displays are common. Unlike LEDs, the shapes of elements in an LCD panel are arbitrary since they are formed on the display by photolithography. In contrast, the shapes of LED segments tend to be simple rectangles, reflecting the fact that they have to be physically moulded to shape, which makes it difficult to form more complex shapes than the segments of 7-segment displays. However, the high recognition factor of seven-segment displays, and the comparatively high visual contrast obtained by such displays relative to dot-matrix digits, makes seven-segment multiple-digit LCD screens very common on basic calculators.
Seven-segment displays have been widely used in the world, such as air-conditioners, clocks, watches, and even the large scoreboards on baseball fields now… etc., as long as they can display numbers such as numbers.
Most of the bit devices are presented by the seven-segment display, but the inside is also a single chip to promote the seven-segment display, such as binary conversion, etc.
The seven-segment display is ubiquitous, don’t look at its small one, although it is very inconspicuous and not very expensive, but it is used in many places
He, in electronic circuits, not only capacitors and resistors, but also seven-segment displays are also indispensable components.
PARTS

Parts
Overlay Style | Overlay Material | Key Touch State | Switch Type | Electronic Component | Terminal(Pitch=1.27/2.54) | Printed Circuit(No terminal) | Waterproof level | Glue Type | Bottom Plate | Other Demands |
---|---|---|---|---|---|---|---|---|---|---|
![]() | PET | ![]() | Metaldome | LED | Male terminal![]() | Carbon ink printed circuit![]() | None | Nitto | Iron bese | Shading sheet |
![]() | PC | ![]() | Polydome | Resistance/capacitance/diode | Female terminal![]() | Carbon Coutech Pitch=1.0/1.25/1.5/2.0/2.54/5.08 | IP65 | 3M | Aluminum base | Electrostatic protection |
![]() | TPU | ![]() | Airdome | Light sensor | Male/Female terminal![]() | FPCCopper foil circuit![]() | IP68 | Others | Acrylic base | Others |
![]() | Others | Others | Others | Seven segment display | Housing Connector![]() | FPC Coutech Pitch=0.3/0.5/0.75/1.0/1.25/1.5/2.0/2.54/5.08 | Other Lavel | Others | ||
Others | Others | Others | Others |
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