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???
12/04/08 08:58
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 		 #160591 - Look at some datasheets?
Responding to: ???'s previous message
A "shift register" is a pretty standard logic function - so any text on digital logic should explain the general principles of how shift registers work.

For specific details related to LED-driver shift registers, look at some Datasheets and Application Notes; eg, Maxim and TI do such things...


List of 60 messages in thread
TopicAuthorDate
Help Req:Working of 8-bit SIPO Shift Register in LED Display            01/01/70 00:00      
   Look at some datasheets?            01/01/70 00:00      
      Sequence            01/01/70 00:00      
   Could you be more specific?            01/01/70 00:00      
      Got U!            01/01/70 00:00      
         New thread            01/01/70 00:00      
            OK...but            01/01/70 00:00      
               You just proved the point!            01/01/70 00:00      
               Here is a possible solution            01/01/70 00:00      
                  Rash assumption?            01/01/70 00:00      
                     you can use MPUs those has built-in flash            01/01/70 00:00      
                  EPROM with AT89S52            01/01/70 00:00      
               permanent?            01/01/70 00:00      
                  No....            01/01/70 00:00      
                     Non-Volatile Storage            01/01/70 00:00      
                        Still a Problem            01/01/70 00:00      
                           Obviously            01/01/70 00:00      
                              Design work before chip selection            01/01/70 00:00      
         What about LED drive current?            01/01/70 00:00      
            if you plan to multiplex ....            01/01/70 00:00      
               I know you're well versed in this context ...            01/01/70 00:00      
                  Phosphor persistence?            01/01/70 00:00      
                     That's in Erik's primary domain            01/01/70 00:00      
                        Todays LEDs turn on and off very fast            01/01/70 00:00      
                           Intermodulation            01/01/70 00:00      
                              you make some additional points, but            01/01/70 00:00      
                           But what about TV?            01/01/70 00:00      
                              persistence of the tube, I guess            01/01/70 00:00      
                                 Blind test?            01/01/70 00:00      
                                    Problematic test strategy            01/01/70 00:00      
                                       double blind ?            01/01/70 00:00      
                                          Blind tests, revisited            01/01/70 00:00      
                                             I have no such problem            01/01/70 00:00      
                                                For flimmer test too?            01/01/70 00:00      
                                                   done inside and outside            01/01/70 00:00      
                  Interlace            01/01/70 00:00      
                     Not Really            01/01/70 00:00      
               Maybe skip intensity and on-the-fly updates            01/01/70 00:00      
                  They haven not been discussed ... yet            01/01/70 00:00      
                     Forget All...........            01/01/70 00:00      
                        Don't you need a refresh memory?            01/01/70 00:00      
                        Table Lookup is Used            01/01/70 00:00      
                        Need buffering            01/01/70 00:00      
                        that is ridiculous            01/01/70 00:00      
                           character generation            01/01/70 00:00      
                              i think you got me...            01/01/70 00:00      
                                 No tricks involved            01/01/70 00:00      
                                 Here's one way ... but you'll have to code it yourself            01/01/70 00:00      
                                    thanks...i'll try it            01/01/70 00:00      
                                       how to reset HEF4094            01/01/70 00:00      
                                          difference between "strobe" and "output enable" pins?            01/01/70 00:00      
                                          Only be serially writing zeros to it...            01/01/70 00:00      
                                          How are you using the '4094?            01/01/70 00:00      
                                             Not so simple for a newbie...            01/01/70 00:00      
                                                perhaps you're right, Kai            01/01/70 00:00      
                                                   Thanks, but            01/01/70 00:00      
                                                      Did you even read the prior posts?            01/01/70 00:00      
                                                         multiple parallel outputs            01/01/70 00:00      
                                                            actually, yes!            01/01/70 00:00      
   Telephonic discussion            01/01/70 00:00      

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