The segment is a combination of 7 LED lines or segments. The segments of the display lights in different combinations to display Numbers from 0 to 9, the Arabic Numerals. The number is displayed by the code or any encoder-decoder IC which gives the command to light LED to make combination and display numbers.
TM1637 4-Digit 7 Segment LED Display Module for Clock
Micro USB to DIP Adapter Module Breakout Board
16 Segment Alphanumeric LED Display Common Anode 








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