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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 5,947 of 7,706   
   Arlet Ottens to West   
   Re: F/F Circuit   
   07 Dec 07 08:06:36   
   
   XPost: sci.electronics.design   
   From: usenet+5@c-scape.nl   
      
   West wrote:   
   > Using a 555 or similar type chip, I would like to have the output change   
   > from low to high or high to low every time the system is turned on. IOW, the   
   > output is a high, then the system is turned off. When the system is turned   
   > back on, the output goes low. Each power up of the circuit changes or   
   > "flips" the output state. I am willing to incorporate CMOS and a battery   
   > back up in the design. Some of the ideas I entertained is a divide by 2 in   
   > front of the toggle, giving me the same state every other time. However, I'm   
   > not sure how to do this practically or if it's the way to go. Any   
   > suggestions out there? All comments welcomed and thanks.   
      
   Use a PIC, and save the state in EEPROM if you don't need more than   
   1,000,000 power cycles.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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