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???
05/18/06 10:36
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 		 #116477 - Think about it
Responding to: ???'s previous message
Abid Ali Siddiqui said:
the basic is subroutines of controlling the 7seg with out any multiplexing ic

Do you understand the principle of how multiplexing works - irrespsective of whether you do it in hardware or software?

Save This Code
REPEAT
   select the 1st digit;
   activate segments for the 1st digit;
   pause;
   
   select the 2nd digit;
   activate segments for the 2nd digit;
   pause;

   :
   :
   etc, etc,...
FOREVER
(it may be worth having a brief "all segments off" period between digits)

You might do this in a timer interrupt, or as part of your main code loop...



List of 35 messages in thread
TopicAuthorDate
multiplexing Direct Driv            01/01/70 00:00      
   not without buffers            01/01/70 00:00      
      yah            01/01/70 00:00      
         incomplete answer            01/01/70 00:00      
         200 mw 7seg, 89c51 uC            01/01/70 00:00      
      Current capabilities            01/01/70 00:00      
         ok i will use 15 mA of 7 seg            01/01/70 00:00      
            Think about it            01/01/70 00:00      
               Ghosting effect            01/01/70 00:00      
                  Yes, that's what I was thinking            01/01/70 00:00      
   how can i show my scimatic diagram            01/01/70 00:00      
      Newbie's Guide            01/01/70 00:00      
    please dear any one advise me            01/01/70 00:00      
      no one can            01/01/70 00:00      
      Some advice            01/01/70 00:00      
      Wrong way up!!            01/01/70 00:00      
         Common-Cathode and Common-Anode            01/01/70 00:00      
      Make a start            01/01/70 00:00      
   AT89c51            01/01/70 00:00      
   look up in the datasheet what is the max            01/01/70 00:00      
      i am using just for practice            01/01/70 00:00      
         I do not know what micro understands            01/01/70 00:00      
            how can its impossible            01/01/70 00:00      
               that's it            01/01/70 00:00      
                  :( i think i am so duffer            01/01/70 00:00      
                     that is not eben english            01/01/70 00:00      
                        ok now tel me that            01/01/70 00:00      
                           datasheet ?            01/01/70 00:00      
                           that does not matter            01/01/70 00:00      
                     English            01/01/70 00:00      
   you should be a novice like me            01/01/70 00:00      
      i will try my best for this mistakes :)            01/01/70 00:00      
         Internet is not SMS            01/01/70 00:00      
         some ideas            01/01/70 00:00      
            Eh???            01/01/70 00:00      

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