Educational calculating device, especially for primary school children

摘要

calculating machine comprising a microprocessor (1) for the control of the operations performed by the machine, a pile of shift registers (2) associated with the microprocessor, and for the temporary storage of numbers on which operations should be carried out, a mem r die (7) containing the programmes relating to the functions of the machine, a display controller (5).associated with the microprocessor (1) and a read only memory (7) and a display (10) for display of results, characterized in that it comprises in addition means for display on the display screen (10) of the machine, information relating to mathematics teaching for the operation of the machine.