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This is standard and is shown in the SN datasheet: You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero.

Simply wire the respective letters a. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. Would you like to answer one of these unanswered questions instead?

Thank you for your interest in this question. How to connect decoder to 7-segment display? Home Questions Tags Users Unanswered. I’ve connected a decoder to 7-segment display as shown in figure. 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.


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I just want to know the right way to connect the output pins of to the pins of 7-segment display? The pinout is here: 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.

Here is a link to a video I made on instagram of mine working using this schematic: Michael George 1, 8 34 You can use a diode tester or a simple voltage source and a resistor to determine the datxsheet of your particular display.

Danny Sebahar 9. Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Pin 5 should go to GND. Note that this is an ancient display and an ancient TTL chip both are dztasheet old and because it’s TTL open inputs will read as ‘high’.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. When I connect an input, the LEDs doesn’t form numbers but they light up randomly.


Then just map the pins correctly again, from datasheet: 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 datashdet association bonus does not count. This is standard and is shown in the SN datasheet:.

Spehro Pefhany k 4 Each segment on a 7-segment display is designated a letter A-G. The pinout is here:. Then just map the pins correctly again, from datasheet:.