So by forward biasing the appropriate pins of the LED segments in a particular order, some segments will be light and others will be dark allowing the desired character pattern of the number to be generated on the display. ![]() The other LED pins are connected together and wired to form a common pin. These LED pins are labeled from a through to g representing each individual LED. An additional 8th LED is sometimes used within the same package thus allowing the indication of a decimal point (DP) when two or more 7-segment displays are connected together to display numbers greater than ten.Įach one of the seven LEDs in the display is given a positional segment with one of its connection pins being brought straight out of the rectangular plastic package. ![]() Each of the seven LEDs is called a segment because when illuminated the segment forms part of a numerical digit (both Decimal and Hex) to be displayed. The 7-segment display consists of seven LEDs arranged in a rectangular fashion. In this lesson you will learn how to use such a display to display characters. Different letters/numbers can be represented by connecting different pins on the display to the power source, thus turning on the LEDs in parallel. A 7-segment display is a device made up of seven LEDs connected in parallel that can be used for displaying numerals and some letters.
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