Armandas 6, 1 23 Then just map the pins correctly again, from datasheet:. 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’. How to connect decoder to 7-segment display? When I connect an input, the LEDs doesn’t form numbers but they light up randomly. The pinout is here:
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How to connect decoder to 7-segment display? This is standard secoder 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. Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Would you like to answer one of these unanswered questions instead?
7447 – 7447 BCD to 7-Segment Decoder/Driver with Open Collector Output Datasheet
Here is a link to a video I made on instagram of mine working using this schematic: The pinout is here:. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A.
You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display. However, they don’t seem to mention decoser you need to have the inputs of the connected to something for it to work like you want it to.
Using the BCD to Seven-segment display
Note that this is an decoddr display and an ancient TTL chip both are museum old and because it’s TTL open inputs will read as ‘high’. Thank you for your interest in this question.
Using the 74xx47 BCD to Seven-segment display
I’ve connected a decoder to 7-segment display as shown in figure. Danny Sebahar 9.
Each segment on a 7-segment display is designated a letter A-G. When I connect an input, the LEDs doesn’t form numbers but they light up randomly. I just want to know the right way to connect the output pins of to the pins 74477 7-segment display?
This is standard and is shown in the SN datasheet:. Pin 5 should go to GND. Michael George 1, 8 34 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. The pinout is here: Then just map the pins correctly again, from datasheet: Armandas 6, 1 23 Spehro Pefhany k 4 Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires degment reputation on this site the association bonus does not bcv.
Home Questions Tags Users Unanswered. Then just map the pins correctly again, from datasheet:.