Press IO TWICE - 2. HOLD ^3 key for approximately 3 seconds r 3. Press □ □ □ □ r4. Press Q key to SELECT AM/PM 5. Press key to confirm the time 6. Press m key (to return to normal calculation mode) Addition or Subtraction with Adding Machine Mode Example 200 + 300 - 200 + 600 - 400 = 500 < Operation> GD B □ n □ B Q B □ El C El C a Need to press Q or Q key after inputting numeric number Need to press fl key, not B key (In case of multiplication or division, use key) ** Ativa w