Ŀ
                                                               
   LPT (D-25):                                                 
                                                               
   signal pin                                                  
                  20k   20k                                    
   D0     2   >İ> 0v (GND, pin 20)            
                  20k  10k                                    
   D1     3   >İĴ                                        
                  20k  10k                                    
   D2     4   >İĴ                                        
                  20k  10k                                    
   D3     5   >İĴ                                        
                  20k  10k                                    
   D4     6   >İĴ                                        
                  20k  10k                                    
   D5     7   >İĴ                                        
                  20k  10k                                    
   D6     8   >İĴ                                        
                  20k  10k                                    
   D7     9   >İĴ                                        
                  20k  10k      100nF                         
                      >  >Ĵ>                      
                                                             
                       10k      10nF   > Amplif.           
                                                             
   GND    20  >>  >>                      
                                                               

