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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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