Calculator including a microprocessor (1) controlling the operations performed by the calculator, a stack of shift registers (2) associated with the microprocessor and intended for the temporary storage of the numbers on which the operations must be performed, a read only memory (7) containing the programs relating to the functions of the calculator, a display controller (5) associated with the microprocessor (1) and the read only memory (7), a display screen (10) and a keyboard (11) for controlling the operations and entering data into the calculator, characterized in that its display screen comprises, disposed in at least one interval between two of its consecutive digits, a complex sign (13) formed from segments enabling the display, under the control of the display controller (5) and the microprocessor (1), according to the operation in progress, of the symbolic sign (+, -, x, ÷, ├, =, , , *) of the corresponding operation.
展开▼
