CITI.ZEV CT-013 Calculators

Press ON/AC (or ON or AC to clear all values, 2. Press the CE key toclear the "ERROR" but the value on the display is still can effective, MR & GT are still srored. 3.If the calculation becomes more than 99 steps. It is Indicated in display by flashing 99 on the left side of display. Further calculation can be continued but not stored in replay memory.