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Pin 5 should go to GND. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms 7447j Service. Home Questions Tags Users Unanswered.

Michael George 1, 8 34 Then just map the pins correctly again, from datasheet:. Spehro Pefhany k 4 This is standard and is shown in the SN datasheet: You need to tie them to appropriate logic levels RBI should datashest ‘0’ if you want to display a zero.

I just want to know the right way to connect the output pins of to the pins of 7-segment display? Danny Sebahar 9. Thank you for your interest in this question. The pinout is here:. How to connect decoder to 7-segment display?


However, they don’t seem dztasheet mention that you need to have the inputs of the connected to something for it to work like you want it to. This is standard and is shown in the SN 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 the association bonus does not count. 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’. 7447j is a link to a video I made on instagram of mine working using this schematic: Would you like to answer one of these unanswered questions instead?

Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Simply wire the respective letters a.

I’ve connected a decoder to 7-segment display as shown in figure. Each segment on a 7-segment display is designated a letter A-G.


Octal to 7-segment LED decoder – Discussion Forums – National Instruments

Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. The pinout is here: Then just map the pins correctly again, dagasheet datasheet: When I connect an input, the LEDs doesn’t form numbers but they light up randomly.

Note that this datasheet illustration is a bit messed up and the bottom segment is D 747n Eand next segment clockwise lower left is E. You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display.