Casio HR-8TM - printing calculator

Key Features and Benefits: Key rollover Key operations are stored in a buffer, so nothing is lost even during high-speed input. Cost/sell/margin Calculate the cost, selling price, or margin of profit on an item, given the other two values. Profit margin percent "%" key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values. Function command signs A symbol on the display indicates the status of operation you are currently performing. 1.6 line-per-second printing The value indicates the number of lines printed per second.