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The 7-segment displays are actually just seven LEDs lined up in a particular pattern (the shape of '8'). Each of the seven LEDs is called a segment because when illuminated, the segment forms part of a numeric digit (both decimal and hex).
These individual segments are labeled from 'A' to 'G' representing each individual LED. By setting the particular segment to HIGH or LOW, a desired character pattern is generated.
The TM1637 module includes four 0.36 segment 7-segment displays to display sensor data or temperature. In addition to the four 7-segments, the module has a 'colon' at the center which makes it very easy to create clock or time-based projects.
The TM1637 module operates on a supply voltage of 3.3 to 5 volts and communicates via a two-wire bus, so it only requires two data pins plus VCC and ground. The bus is specific to this device, but there are libraries available for Arduino that hide the complexities and make it easier to communicate with the display.
Features of the LED display module
Arduino library: https://github.com/avishorp/TM1637
Arduino code: Code
Chip Datasheet: https://cdn.shopify.com/s/files/1/0647/7702/7824/files/tm1637-based-4-bits-red-digital-tube-led-display-module.pdf?v=1656507007