Special Features:

12 digit dual powered portable desktop calculator uses both solar and battery power for disply; big number angled display easy to read w/ergonomically designed body and keys; 3 memory keys, square root, sign change, sign shift and oo keys

Properties:

A small computerized device which performs arithmetic calculations. It may have keys which calculate algebraic, trigonometric, or other functions. It may be programmable or include alphanumeric capability (such as for telephone lists or memos). Excludes accounting machine. See also adding and subtracting machine and adding machine.