El decodificador está diseñado para activar segmentos específicos, aún de códigos de entrada mayores que (9). Representaciones. 1,2,6,7. El decodificador integrado es un circuito lógico que convierte el código binario de entrada en formato BCD a niveles lógicos que. SNAN. SNANE4. ACTIVE. PDIP. N. Green (RoHS. & no Sb/Br). CU NIPDAU. N / A for Pkg Type. 0 to SNAN. SN74LS47D. ACTIVE.

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Each segment on a 7-segment display is designated a letter A-G.

When I connect an input, the LEDs doesn’t form numbers but they light up randomly. Decodificadkr that this is an ancient display and an ancient TTL chip both are museum old and because it’s TTL open inputs will read as ‘high’.

Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Then just map the pins correctly again, from datasheet:. Would you like to answer deocdificador of these unanswered questions instead? How to connect decoder to 7-segment display?


I just want to know the right way to connect the output pins of to the pins of 7-segment display?

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Like the other two most popular answers, your decodificsdor segment display needs to be connected to the properly Outputs to Seven-segment display inputs: This is standard and is shown in the SN datasheet: The pinout is here: Danny Sebahar 9.

Then just map the pins correctly again, from datasheet: Simply wire the respective letters a. Home Questions Tags Users Unanswered. Spehro Pefhany k 4 Armandas 6, 1 23 Here is a link to a video I made on instagram of mine working using this schematic: This is standard and is shown in the SN datasheet:.

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I’ve connected a decoder to 7-segment display as shown in figure. Devodificador can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display.


Pin 5 should go to GND. Note decoddificador this datasheet illustration is a bit messed up and the bottom segment is D not Eand next segment clockwise lower left is E. You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero.

The pinout is here:. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. Michael George 1, 8 34 Thank you for your interest in this question.

However, they don’t seem to mention that you need to have the inputs of the connected to something for it to work like you want it to.