Cant make 7segment display run using 74LS47 IC

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SUMMARY

The discussion centers on the operation of a 7-segment display using the 74LS47 IC. The user connected the display to the correct pins but encountered issues with the display not lighting up when inputting binary values. Key solutions include using series resistors, specifically 330 ohms, for each lead to the display and tying the blank input (pin 5) high to ensure proper functionality. The 74LS47 IC is still available for use in such applications.

PREREQUISITES
  • Understanding of 74LS47 IC functionality
  • Basic knowledge of 7-segment display wiring
  • Familiarity with binary input systems
  • Experience with using current limiting resistors in circuits
NEXT STEPS
  • Research the specifications and pin configuration of the 74LS47 IC
  • Learn about current limiting resistors and their importance in LED circuits
  • Explore troubleshooting techniques for 7-segment displays
  • Investigate alternative ICs for driving 7-segment displays, such as the 74HC595
USEFUL FOR

Electronics hobbyists, circuit designers, and students learning about digital displays and integrated circuits will benefit from this discussion.

chrisalviola
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would a 7 segment display show numbers if you only use a 74LS47 ic only?
i connected it all the pins right according to the schematics
7447.gif


the 7 segment display is connected right in pins 15-9 in 7447 ic and the pins 7,1,2 & 6 i used as 4 bit binary input, so when i input 0101 which is 5 no light come out from the 7 segment, is there anything wrong in my connections?
 
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