Olivetti Summa 60 Instructions D'emploi page 11

Overview
(1) Converts the displayed value to a foreign currency.
(2) Calculates the value including VAT, sets the VAT rate.
(3) Calculates the net value without VAT, recalls the VAT rate.
(4) Converts the displayed value to local currency.
(5) Sets the currency exchange rate.
(6) Clears all, including memory contents.
(7) Power on / clears the last number entered or the last calculation.
(8) Enter the required number. Max 12 digits can be entered.
(9) Enters a decimal point.
(10) Addition, adds an amount to the accumulator.
(11) Equal, completes the calculation.
(12) Multiplication, enter the first number (multiplicand) and press [×]. Then enter the
second number (multiplier) and press [=] or other keys, as necessary, to obtain
the result.
(13) Division, enter the number to be divided (dividend) then press [÷]. Then enter
the second number (divisor) and press [=] or other keys, as necessary, to obtain
the result.
(14) Subtraction, subtracts an amount from the accumulator.
(15) Backspace correction.
(16) Completes percent calculation.
(17) With the CSM/MEMORY selector (23) set to MEMORY, subtracts an amount
from memory. With this selector set to CSM, defines or calculates a percent
profit margin value.
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