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???
12/27/04 01:20
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 		 #83907 - Some sort of DAC is what you need!
Responding to: ???'s previous message
You could also use a very simple R-2R-ladder-DAC, like it's shown here:

http://www.8052.com/forum/read.phtml?id=48128

Of course, such a thing can be much less precise than a 'real' DAC, for instance the one Steve recommended. All the resistors must highly match.

By the way, I remember that in the early eighties we once had to display the content of a PROM on scope using 'X', 'Y' and 'Z' inputs. We didn't use any real DAC, only a weigthed 'ladder-DAC', an '9368' and some LSTTL-chips. Worked very nicely and looked highly accurate...

Kai

List of 48 messages in thread
TopicAuthorDate
Interfacing the 8051 with a CRO            01/01/70 00:00      
   Display something on CRO            01/01/70 00:00      
      Display on CRO            01/01/70 00:00      
      More Elaborate!            01/01/70 00:00      
         Re: More Elaborate.            01/01/70 00:00      
            More elaborate            01/01/70 00:00      
         First test            01/01/70 00:00      
         Some sort of DAC is what you need!            01/01/70 00:00      
            Success !!            01/01/70 00:00      
               Picture posting            01/01/70 00:00      
                  Directory is enough            01/01/70 00:00      
   DAC            01/01/70 00:00      
   I to am working on CRO 1.0 for techfest            01/01/70 00:00      
      techfest?            01/01/70 00:00      
         Share the Prize?            01/01/70 00:00      
            Teamwork            01/01/70 00:00      
               ...aND            01/01/70 00:00      
                  Mmmmm TechFest!            01/01/70 00:00      
                     Atari            01/01/70 00:00      
               Re:            01/01/70 00:00      
                  This link has a vector clock display            01/01/70 00:00      
                     Great Enthusiasm            01/01/70 00:00      
                     Vector Clock English version            01/01/70 00:00      
                        German version            01/01/70 00:00      
                           Vektor klock            01/01/70 00:00      
                     'scope clocks, desert style            01/01/70 00:00      
               Explain Display Routine            01/01/70 00:00      
                  Please Explain!            01/01/70 00:00      
                  Display routine is not enough            01/01/70 00:00      
                  Display routine            01/01/70 00:00      
                     Z point            01/01/70 00:00      
                        Z point            01/01/70 00:00      
                        Concretize please            01/01/70 00:00      
                           How to do "Z"            01/01/70 00:00      
                              Integrators            01/01/70 00:00      
                        Small help            01/01/70 00:00      
   Programming Problems!!            01/01/70 00:00      
      nice to hear about you again            01/01/70 00:00      
          help ?            01/01/70 00:00      
            Why worry.            01/01/70 00:00      
            the logic of drawing lines            01/01/70 00:00      
      A slight misunderstanding            01/01/70 00:00      
         Isn't this process hidden for the user?            01/01/70 00:00      
            Re:            01/01/70 00:00      
            Sort of...            01/01/70 00:00      
   Apologies!            01/01/70 00:00      
      Answered in other Thread!            01/01/70 00:00      
      Optimise?            01/01/70 00:00      

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