Large 12-digit, angled, liquid crystal display; high-quality keys; PC touch keyboard Decimals appear in 0, 1, 2, 3, 4 and floating positions; cost/sell/margin keys and 3-key memory Offers add mode, tax calculation, business functions, grand total feature, percent, and sign change Also offers percentage add-on/discount, round off/up/down and square root Operates on solar and battery power; automatically shuts off after 7 minutes of nonuse