MemCalc has all the basic functions of a standard calculator plus a few unique extras including one no other has; 5 separate and persistent memory banks. These are handy for keeping track of up to 5 checking and savings accounts, payments, mortgages and other changing balances. It will retain your balances even after you turn the calculator off. Included is a basic weights and measures converter. MemCalc also has a calculation tape function that can be printed just like a desktop calculator. Entries can be made using a mouse or the number pad on your keyboard. Automatically creates a backup of your accounts and settings every time you use it in case you make a mistake in the current session.