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Home Questions Tags Users Unanswered. You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero. I’ve connected a decoder to 7-segment display as shown in figure.

Then just map the pins correctly again, from datasheet: Would you like to answer one of these unanswered questions instead? Simply wire the respective letters a. Armandas 6, 1 23 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.


Spehro Pefhany k 4 By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Pin 5 should go to GND. You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display.

Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment datashest inputs: This is standard and is shown in the SN datasheet:. When I connect an input, the LEDs doesn’t form numbers but they light up randomly. Thank you for your interest in this question.

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 7474n like you want it to. This is standard and is shown in the SN datasheet: How to connect decoder to 7-segment display?

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Then just map the pins correctly again, from datasheet:. Further, this really old chip saved a few transistors by not 7447b decoding inputs above 0x09, so 0x0A.


Note that this is an ancient display and an ancient TTL chip both are dafasheet old and because it’s TTL open inputs will read as ‘high’. The pinout is here: The pinout is here:.

Here is a link to a video I made on instagram of mine datashete using this schematic: I just want to know the right way to connect the output pins of to the pins of 7-segment display? 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. Danny Sebahar 9.

Michael George 1, 8 34