#include <TM1637Display.h>
#define CLK 2
#define DIO 3

TM1637Display display(CLK, DIO);

void setup() {
    display.setBrightness(0x0f); // Maximum brightness
}

void loop() {
    // Step 1: Display "1234"
    uint8_t data[] = {
        display.encodeDigit(1), // Digit 0: "1"
        display.encodeDigit(2), // Digit 1: "2"
        display.encodeDigit(3), // Digit 2: "3"
        display.encodeDigit(4)  // Digit 3: "4"
    };
    display.setSegments(data);
    delay(1000); // Wait 1 second

    // Step 2: Clear first two digits, show "00" in last two
    data[0] = 0x00; // Blank first digit
    data[1] = 0x00; // Blank second digit
    data[2] = display.encodeDigit(0); // Third digit: "0"
    data[3] = display.encodeDigit(0); // Fourth digit: "0"
    display.setSegments(data);
    delay(1000); // Wait 1 second
}