CalculatorCalculatorThis smartphone has a calculator application for basiccalculations.Note: This calculator has limited accuracy and isdesigned for simple calculations.Fig. 29: CalculatorTo perform calculations, tap the buttons on thedisplay.The calculator performs operations in the order in whichthey are written, despite the hierarchical differenceYou cannot remove an entered operation symbol from theinput field. If you enter two operator symbols in sequence,the latter one replaces the former symbol. Otherwise youcan use backspace to remove the last value character inthe input field when editing a calculation.To switch between the normal calculator view andtill roll calculator view, press and select View>Normal or Till roll. The till roll calculator shows allprevious input.To clear the entire till roll, press and select Edit> Clear till roll.To flip the position of buttons and input field, pressand select Display > Flip layout.Using calculator memoryIt is possible to store one number value at a time in thememory of the calculator and then recall it, and add orsubtract a value to/from this value in the memory. Whenany number value besides zero (0) is saved in the memory,
