User manual OLIVETTI GIOCONDA

[. . . ] We are confident that you will find this new solar cell powered calculating machine essential for satisfying all of your calculating needs. [. . . ] When used together with the TAX+ key, sets the percentage to associate to the TAX+ and TAXkeys. SET Enter the exchange rate in local currency and then press this key to store the rate. Pressed once during a calculation, displays the increased (gross) value while pressed a second time displays the amount increased. When pressed a second time during a calculation, displays the breakdown value. Pressed once displays the memory subtotal, pressed a second time ends the operation, displays the total and then clears the memory. The decimal point is automatically placed two positions to the left during a calculation. [. . . ] Error condition; displayed when an incorrect entry is made or when the calculation exceeds the machine's capacity. [. . . ]