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???
07/31/05 13:48
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 		 #98519 - re also
Responding to: ???'s previous message
here are results kai,
input to 74hc165 output
01111111b 1111111b
01111110b 1111110b
11111001b 11111011b
01111001b 1111011b
11110001b 11110011b
11101001b 11110111b
11100001b 11100011b
01100001b 1100011b
01101001b 1110111b
11110000b 11100001b
01110000b 1100000b
and one more observation is that it reads 11111111b if i ground any one input from eight inputs.
shivani


List of 28 messages in thread
TopicAuthorDate
74hc165 read problem            01/01/70 00:00      
   pull ps?            01/01/70 00:00      
      external pull up            01/01/70 00:00      
   74LS165 schematic and assembly program            01/01/70 00:00      
      re 74LS165 schematic and assembly progra            01/01/70 00:00      
   connections and timings            01/01/70 00:00      
      Port0 can show very high rise times            01/01/70 00:00      
      thanks oleg and kai            01/01/70 00:00      
      re connections and timings            01/01/70 00:00      
         What pull-ups?            01/01/70 00:00      
            Also....            01/01/70 00:00      
               re also            01/01/70 00:00      
                  Very strange...            01/01/70 00:00      
                     re Very strange...            01/01/70 00:00      
                        Something wrong with 74HC165?            01/01/70 00:00      
                           If you have an oscilloscope..            01/01/70 00:00      
                              re If you have an oscilloscope..            01/01/70 00:00      
            re What pull-ups?            01/01/70 00:00      
               HC vs HCT vs TTL            01/01/70 00:00      
   165 access problem            01/01/70 00:00      
   using opto to pulldown pin of 74hc165            01/01/70 00:00      
      which optocouplers            01/01/70 00:00      
      time for schematics            01/01/70 00:00      
   here is solution            01/01/70 00:00      
   it is working            01/01/70 00:00      
      because of something in your hardware            01/01/70 00:00      
         nop not due to hardware            01/01/70 00:00      
            still could be            01/01/70 00:00      

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