User manual OLIVETTI LOGOS 664B

[. . . ] Locations subject to rapid temperature changes, high humidity or dirt should also be avoided. The electrical power outlet should be near the equipment and within easy reach. [. . . ] For example, a number at the 3rd decimal place is rounded to the 2nd place. Number of entries using keys [+], [-], [M±] and [M] will be counted. the counter is incremented for [+] and [M±] , and decremented for [-] and [M]. Result is printed on the left when [], [*], [M] or [M*] keys are used. Cost key Used to enter Cost factor in a Cross Profit Margin calculation. Sell key Used to enter Selling price in a Cross Profit Margin calculation. Margin key Used to enter desired Margin in a Cross Profit Margin calculation. Tax plus key Calculates an amount including VAT with Tax rate preset by [RATE] key. Tax minus key Calculates an amount excluding VAT with Tax rate preset by [RATE] key. Square root key Calculates the square root of the contents of the display. Percentage key Completes percent calculation when [x] or [÷ Delta percent key Automatically compares any two amounts, calculating and printing the percent difference. Division key To divide, enter the number to be divided (dividend) and press the [÷ ] key; then enter the second number (divisor) and press the [=] key or other keys necessary to obtain result. [. . . ] 4 rules, successive calculation, memory calculation, grand total calculation, constant calculation, tax calculation, currency exchange calculation, delta percent calculation, cost-sell margin calculation. CURRENCY EXCHANGE There are 13 Euro currency rates available in memory, the default value is preset to 1. [. . . ]