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Bistable latch - help needed please!

Discussion in 'Science' started by PinkHelen, Mar 19, 2012.

  1. PinkHelen

    PinkHelen New commenter

    Hi all, I'm wanting to set up the bistable latch to use as a demonstration with my year 11 class for the OCR Gateway P6 unit. We've got a set of NOR gates to use now and an LED to use as an output device, but I have been struggling to set up the circuit. I've never really studied electronics (at school or at university) so have no expertise in this area at all.

    I have the diagram below from the teacher/technician info we have, and I can set this bit up no problem, but I can't get my head around where A and D connect to, or where the two output wires go either. I've asked around in the department, and no-one can answer my question either.

    EDIT: no idea how to upload a picture on here, and help is much appreciated! [​IMG]
     
  2. PinkHelen

    PinkHelen New commenter

    Hi all, I'm wanting to set up the bistable latch to use as a demonstration with my year 11 class for the OCR Gateway P6 unit. We've got a set of NOR gates to use now and an LED to use as an output device, but I have been struggling to set up the circuit. I've never really studied electronics (at school or at university) so have no expertise in this area at all.

    I have the diagram below from the teacher/technician info we have, and I can set this bit up no problem, but I can't get my head around where A and D connect to, or where the two output wires go either. I've asked around in the department, and no-one can answer my question either.

    EDIT: no idea how to upload a picture on here, and help is much appreciated! [​IMG]
     
  3. missmunchie

    missmunchie New commenter

    This looks like a more complete circuit, showing where all the wires go, just scroll down the page a bit.

    http://www.doctronics.co.uk/4001.htm#other

    I've never taught this but I have taught logic gates before.
     
  4. PinkHelen

    PinkHelen New commenter

    Thanks, that's really helpful!
     

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