Semi-desktop 12-digit calculator is made from the recycled materials of Canon copiers. Upper and lower casing are made from a high percentage of recycled plastic. Functions include tax calculation, square root, sign change, grand total memory, and three memory keys. Decimal positions are in add mode, 4, 3, 2, 0, and floating. Large LCD is angled for easy recognition of numbers. Calculator automatically shuts off after seven minutes of nonuse. Calculator runs on solar and battery power.