The output pins generate two BCD digits in single output, which makes a single number on 7-segment. These all gates combination makes the IC with 4 input and 7 output pins. It has 17 AND gate, 4 NOR gate, 6 NOT gates, and 8 NAND gate. To do the special pattern we could use logic gates, but an IC 74LS48 can also be used to control the 7-segments. Every time to make a single number some specific pins should have power input. Each 7-Segment has seven input pins to light up a single led in the seven segments. The 7-Segment is a small seven LED-based device use to represent a single numeric value from 0 to 9. 74LS48 is a BCD to seven segments decoder that is used to display numbers decoded in binary coded decimal format.
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