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Would you like to answer one of these unanswered questions instead? I just want to know the right way to connect the output pins of to the pins of 7-segment display? Each segment on a 7-segment display is designated a letter A-G. However, they don’t seem to mention that you need to have the inputs of the connected to something for it to work dagasheet you want it to. Simply wire the respective datashete a. I’ve connected a decoder to 7-segment display as shown in figure.

This is standard and is shown in the SN datasheet:. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


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Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. How to connect decoder to 7-segment display?

The pinout is here: Note that this dafasheet illustration is a bit messed up and the bottom segment is D not Eand next segment clockwise lower left is E. Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Thank you for your interest in this question. Note 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’.

Here is a link to a video I made on instagram of mine working using this schematic: You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero.

pbx+/n datasheet & applicatoin notes – Datasheet Archive

When I connect an input, the LEDs doesn’t form numbers but they light up randomly. Armandas 6, 1 23 This is standard and is shown in the SN datasheet: Spehro Pefhany k 4 Pin 74447n should go to GND.


Home Questions Tags Users Unanswered. Danny Sebahar 9. Then just map the pins correctly again, from datasheet: Then just map the pins correctly again, from datasheet:.

The pinout is here:. 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.

Michael George 1, 8 34 You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display.