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David Prentice
01/22/12 07:48
Read: 614 times
Wormshill
England


 
#185620 - The 4094 chip has an OE pin
Responding to: Andy Neil's previous message
You do not even need to write blanks to the shift registers.

Simply de-assert the OE pins.

I would be a lot happier if the OP understood the purpose of segment resistors.
I suspect that this is a purely imaginary project that uses Proteus.

The simplest solution is to imagine everything works perfectly.

David.

List of 44 messages in thread
TopicAuthorDate
switch interfacing      Anil Kumar      01/11/12 00:38      
   What?      Per Westermark      01/11/12 00:58      
      switch interfacing      Anil Kumar      01/11/12 01:39      
         The 7-segment digits will not handle switches      Per Westermark      01/11/12 02:57      
   Perhaps this may be useful to you      Maunik Choksi      01/11/12 03:53      
      4 buttons - not full keypad      Per Westermark      01/11/12 04:39      
         switch interfacing      Anil Kumar      01/12/12 00:06      
            That is called edit mode      Maunik Choksi      01/12/12 01:55      
               switch interfacing      Anil Kumar      01/12/12 22:50      
                  You need to study some examples      Maunik Choksi      01/12/12 23:51      
                     switch interfacing      Anil Kumar      01/13/12 00:10      
                  Details details - and where is debounce/repeat handling?      Per Westermark      01/13/12 01:20      
                     switch interfacing      Anil Kumar      01/14/12 00:59      
            Why should this be a problem??      Kai Klaas      01/12/12 07:53      
            interfacing your switches has nothing to do with LED's      Richard Erlacher      01/12/12 22:02      
   MUX LED AS O/P PIN      Satish S Munot      01/14/12 19:47      
      Switch interfacing      Anil Kumar      01/19/12 23:19      
         divide and conquer      Mahmood Elnasser      01/20/12 01:35      
         simplified step-by-step way to post your schematic        KONSTANTINOS L. ANGELIS      01/20/12 02:12      
            remember      Erik Malund      01/20/12 07:31      
               ? Not Muxing ?      Michael Karas      01/20/12 08:17      
   switch interfacing      Anil Kumar      01/21/12 01:57      
      You need lots of resistors      David Prentice      01/21/12 04:34      
         (Back to) Basics      Andy Neil      01/21/12 05:17      
            multiplex 5 digits      David Prentice      01/21/12 05:43      
               Don't think anyone would want 1:35 degenerate "multiplexing"      Per Westermark      01/21/12 05:52      
                  Have I done the sums wrong?      David Prentice      01/21/12 06:06      
                     No but multiplexing requires few driver lines      Per Westermark      01/21/12 06:17      
                        You MUST have digit drvers      David Prentice      01/21/12 07:00      
                           You missed '4094 OE+PWM for luminocity      KONSTANTINOS L. ANGELIS      01/21/12 09:47      
               No multiplexing needed...      Kai Klaas      01/21/12 07:33      
                  switch interfacing      Anil Kumar      01/21/12 07:46      
                     What help?      Andy Neil      01/21/12 08:33      
                     how?      Erik Malund      01/21/12 08:34      
                     Ah, a homework, right?      Kai Klaas      01/21/12 09:21      
                        switch interfacing      Anil Kumar      01/21/12 09:55      
                           language?      Erik Malund      01/21/12 10:37      
                           i have no logical idea how i write code      Andy Neil      01/21/12 10:40      
                           You need...      Kai Klaas      01/22/12 07:07      
                              Making a seven segment display blink      Andy Neil      01/22/12 07:19      
                                 The 4094 chip has an OE pin      David Prentice      01/22/12 07:48      
                              switch interfacing      Anil Kumar      01/22/12 10:57      
   switch interfacing      Anil Kumar      01/31/12 22:07      
      would you provide some feedback ?      KONSTANTINOS L. ANGELIS      02/01/12 03:35      

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