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8086 Interfacing Examples - EduTechLearners

8086 Interfacing ExamplesInterfacing To Alphanumeric Displays Togive directionsordata valuestousers, many microprocessor-controlled instrumentsandmachines needtodisplay lettersofthealphabet and where a large amountofdataneedstobedisplayed a CRTisusedtodisplay the only a small amountofdataneedstobedisplayed, simple digit-type displays are often used. There are several technologies usedtomake these digit-orienteddisplaysbutweare discussing only the two major types. These arelight emitting diodes(LED)andliquid-crystal displays(LCD). LCD displays use verylowpower,sothey are often usedinportable,battery- powered instruments. Theydonot emit their own light, theysimply change the reflectionofavailable light. Therefore, foraninstrument thatistobeusedinlow- light conditions, you havetoinclude a light source for LCDsoruse LEDs which emit theirownlight.

often multiplexed using a variety of techniques. •In the following section we show you how to interface a nonmultiplexed LCD to a microprocessor such as SDK-86. •Intersil ICM7211M can be connected to drive a 4-digit, nonmultiplexed, 7- segment LCD display. 15

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