Hex digits on a common-anode display (74HC595, pins 11, 12, 13), on an Arduino Uno

// One digit through a 74HC595: 0 to F on a common-anode display.
//
//   74HC595 DS -> pin 11   ST_CP -> pin 12   SH_CP -> pin 13
//   Q0..Q6 -> segments a..g; the display's common anode -> 220 ohm -> 5V
//
// On a common-anode display the segments share their 5 V side, so a segment
// lights when the chip pulls its other end LOW. That is why the patterns
// below look upside down next to a common-cathode table.

const int LATCH = 12;  // ST_CP
const int CLOCK = 13;  // SH_CP
const int DATA = 11;   // DS

void write595(byte value, int order) {
  digitalWrite(LATCH, LOW);
  shiftOut(DATA, CLOCK, order, value);
  digitalWrite(LATCH, HIGH);
}

// The digits 0 to F for a common-anode display: a 0 bit lights a segment.
// Bit 0 is segment a, bit 6 is g and bit 7 is the decimal point.
const byte DIGITS[16] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
                         0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E};

void setup() {
  pinMode(LATCH, OUTPUT);
  pinMode(CLOCK, OUTPUT);
  pinMode(DATA, OUTPUT);
  Serial.begin(9600);
  Serial.println("Mokxi Uno: 0 to F on a 74HC595 and a common-anode digit");
}

void loop() {
  for (int i = 0; i < 16; i++) {
    write595(DIGITS[i], MSBFIRST);
    Serial.println(i, HEX);
    delay(1000);
  }
}