Raccolta di Simulatori reperibili in rete

The educated monkey simulator                        

Curta simulator 1th                                                 

Curta simulator 2nd                                             

Comptometer simulator                                         

Slide rule simulator                                             

Pinwheel simulator  (download and install)  

Abacus (Suan Pan) simulator                                     

Abacus (Soroban) simulator