Nokia 3555 manual Calculator, Countdown timer, Stopwatch

■Calculator

The calculator in your phone provides basic arithmetic and trigonometric functions, calculates the square and the square root, the inverse of a number, and converts currency values.

Note: This calculator has limited accuracy and is designed for simple calculations.

Select Menu > Organizer > Calculator. When 0 is displayed on the screen, enter the first number in the calculation. Press # for a decimal point. Scroll to the desired operation or function or select it from the Options. Enter the second number. Repeat this sequence as many times as it is necessary. To start a new calculation, first select and hold Clear.

To perform a currency conversion, select Menu > Organizer > Calculator. To save the exchange rate, select Options > Exchange rate. Select either of the displayed options. Enter the exchange rate, press # for a decimal point, and select OK.

The exchange rate remains in the memory until you replace it with another one. To perform the currency conversion, enter the amount to be converted, and select Options > To home or To foreign.

Note: When you change base currency, you must enter new exchange rates because all previously set exchange rates are cleared.

■Countdown timer

To start the countdown timer, select Menu > Organizer > Timer > Normal timer, enter the alarm time, and write a note text that is displayed when the time expires. To start the countdown timer, select Start. To change the countdown time, select Change time. To stop the timer, select Stop timer.

To have an interval timer with up to 10 intervals started, first enter the intervals. Select Menu > Organizer > Timer > Interval timer. To start the timer, select Start timer > Start.

■Stopwatch

You can measure time, take intermediate times, or take lap times using the stopwatch. During timing, the other functions of the phone can be used. To set the stopwatch timing in the background, press the end key.

Using the stopwatch or allowing it to run in the background when using other features increases the demand on battery power and reduces the battery life.

Select Menu > Organizer > Stopwatch and from the following options:

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