TM1637 is a chip for driving 7-segment displays. There are several modules using this chip to form a 4 digit numerical display module. TM1637 has also keyboard input capability, but is not used in this module. The Arduino Interface library is also available at github.

Features of TM1637 based 4 Bits Red Digital Tube LED Display Module:

• Ease to use.
• Ease of multiplexing.
• Can use as a 4 digit display unit.
• Can use as a clock display.
• Applications of TM1637 based 4 Bits Red Digital Tube LED Display Module:
• DIY clock project.
• 4 digit display unit.
• Electrical/Electronic projects.
• Counter project using 7 segment display.

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