This model is the first machine (series “L”) with all the functions, arithmetic or carriage shifts, being electrically-driven. New keys were added to move the carriage, clear the Registers, and begin operations.
The great improvement, with regard to the arithmetic operations, is the user-friendliness of negative values, in particular fully automatic positive and negative division, with button for optional stop before completion. The knobs, in the upper part of the carriage, allow direct setting of dividends when using constant divisor.
The shift-keys enable easily the operator to choose into which dials of the “Register I” the number set on the keys is added or from what dials it is subtracted. Multiplication is still performed semi-automatically by means of a sequence of carriage shifts and additions (or subtractions).
“Register I” shows 16 digits, “Register II” and “Register III” show 8 digits each.
