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4-Digit Digital LED Display Tube Control Module 74HC595 Chip Drive
1. Using two 74HC595 chips drive£¬ 3-way need microcontroller IO port£¬ displayed according to the digital dynamic scanning principle; 2. The wide operating voltage of 3.3V to 5V; 3. PCB board size: 16mm*53.1mm 4. The digital tube model: 0.4 inch 4-digital common cathode 5. You can cascade (reserved cascade interface and provides the jumper caps)