Terminated: unknown
It only has a +M key to store something in memory, press +M again to add to what is currently in memory. Use the +/− key on a positive result before pressing +M to subtract.
MT shows the current memory value, press it twice to clear the memory.
Multiplications and divisions are automatically repeated when repeatedly pressing the = key
An error or overflow condition is indicated by a small "o" on the top right oof the display.
This calculator was donated to the museum by my son! Thanks, Jens!