7-segment LED 74LS47 decoder/driver IC related question

dl324

Joined Mar 30, 2015
10,072
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I'm not sure what you're trying to ask.

74LS74 is intended to drive a common anode display and it doesn't display tails for 9. That would make your 0x6F value 0x98.

The conversion from BCD to 7 segments is done with logic gates:
1581460275445.png
Another way to do it is with a ROM array.
 
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