Scientific calculator with cutting edge memory engine, including portable version, and conversion utilities. Inputs can be written to spool and then saved to disc for archiving or reuse. Memories are saved and can be reused on re opening the application. Output spool works like mini text editor for annotation. Memory engine allows seamless calculations using prior values. Seamlessly integrates with portableapps. Running total feature allows storing of a value that can be incre or decremented. Results can be sent to calculator window with a single click. Conversion table results can also be sent to the calculator in the same way.