DIGIT 12 digits Regular percent Regular percent Regular percentage calculations. 150 steps check 150 steps check Displays up to 150 previous calculation steps. Solar & Battery Solar & Battery Solar powered when light is sufficient, battery powered when light is insufficient. Function command signs Function command signs A symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing. Key rollover Key rollover Key operations are stored in a buffer, so nothing is lost even during high-speed input. Extra Large display Extra Large display Larger display makes more data easier to read. Localized number display Localized number display Displays numbers in four digit separator formats(Type A, Type B, Type C and Indian).