* 8 digits
*Automatic calculation of price plus tax, price less tax, discount,
selling price, tax amount, discount amount, and margin amount.
*Time calculation allows easy input and calculation of hour, minute, and second values.
*Two-way power (Solar + Battery)
Solar powered when light is sufficient, battery powered when light is
insufficient.
*Function command signs
A symbol (+, -, ×, ÷) on the display indicates the status of operation
you are currently performing.