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Then just map the pins correctly again, from datasheet: Here is a link to a video I made on instagram of mine working using this schematic: You can use a ratasheet tester or a simple voltage source and a resistor to determine the pinout of your particular display. The pinout is here: 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’.

Spehro Pefhany k 4 By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Would you like to answer one of these unanswered questions instead?


Danny Sebahar 9. I just want datzsheet know the right way to connect the output pins of to the pins of 7-segment display? Armandas 6, 1 23 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.

Note that this datasheet illustration is a bit messed up and the bottom segment is D not Eand next segment clockwise lower left is E. When I connect an input, the LEDs doesn’t form numbers but they light up randomly.

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You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero. Pin datasyeet should go to GND. Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: How to connect decoder to 7-segment display?

The pinout is here:.


However, they don’t seem to mention that you need to datahseet the inputs of the connected to something for it to work like you want it to. I’ve connected a decoder to 7-segment display as shown in figure. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A.

Each segment on a 7-segment display is designated a letter A-G. Michael George 1, 8 34 This is standard and is shown in the SN datasheet: Then just map the pins correctly again, from datasheet:.

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This is standard and is shown in the SN datasheet:. Thank you for your interest in this question. Simply wire the respective letters a.