#include <SPI.h>

// Define pins for data, latch, and clock of the shift register
const int dataPin = 2;   // DS
const int latchPin = 3;   // ST_CP
const int clockPin = 4;   // SH_CP

void setup() {
  // Set pins as output
    pinMode(dataPin, OUTPUT);
      pinMode(latchPin, OUTPUT);
        pinMode(clockPin, OUTPUT);
        }

        void loop() {
          // Define patterns for each digit (0-9)
            byte patterns[10] = {
                B11000000,  // 0
                    B11111001,  // 1
                        B10100100,  // 2
                            B10110000,  // 3
                                B10011001,  // 4
                                    B10010010,  // 5
                                        B10000010,  // 6
                                            B11111000,  // 7
                                                B10000000,  // 8
                                                    B10010000   // 9
                                                      };

                                                        // Loop through each digit
                                                          for (int i = 0; i < 10; i++) {
                                                              // Shift out the pattern for the current digit
                                                                  shiftOut(dataPin, clockPin, MSBFIRST, patterns[i]);
                                                                      // Latch the data to the output pins
                                                                          digitalWrite(latchPin, HIGH);
                                                                              // Hold latch state for a short while to display the digit
                                                                                  delay(5);
                                                                                      // Turn off all segments
                                                                                          shiftOut(dataPin, clockPin, MSBFIRST, B00000000);
                                                                                              digitalWrite(latchPin, LOW);
                                                                                                  // Wait before displaying the next digit
                                                                                                      delay(1000);
                                                                                                        }
                                                                                                        }