Casio Mini Desk Top Calculator, 8 Digital, Larger display makes more data easier to read, Solar powered when light is sufficient, battery powered when light is insufficient, Key operations are stored in a buffer, so nothing is lost even during high-speed input, Tax calculation and currency conversion functions, " % " key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values, A symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing.