Desktop calculator offers a 12-digit; angled; liquid crystal display with large; easy-to-read numbers to provide you with maximum viewing comfort. Ergonomic angle of the display provides comfort and reduces eyestrain from overhead lighting. Display indicates the operation symbol for addition; subtraction; multiplication and division during a calculation and will also show the equal sign when your result is displayed. Decimals appear in 0; 1; 2; 3; 4 and floating positions. High-quality keys incorporate a PC-like keyboard touch. Functions include add mode; tax calculation; business functions; cost/sell/margin keys; three-key memory; grand total feature; percent; and sign change; percentage add-on/discount; round off/up/down and square root. Calculator operates on solar and battery power and automatically shuts off after seven minutes of nonuse.