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  1. Birdie

    Help Plz - Room Noise Detector

    Hello...I reallyneed help I'd like to ask some questions about the room noise detector circuit in page : http://www.electronics-lab.com/projects/sensors/012/index.html 1- How can i try simulation for it ?? as i tried Multisim 8 but i faild to find a mic so is there anyway for simulation ??? 2-...
  2. Birdie

    ATMEL 8051 project

    hi I need some help in my school project.. i'm supposed to make a temperature controling system... where when it's hot a fan works & when it's cold a heater works... My problem is that I don't know what the realy switch is .. i never worked with it before & i dunno its connection so can...
  3. Birdie

    Silly Question

    hello i need that the question i'll ask is a very silly one but i really dunno it's answer.. I have an on/off switch with 6 pins & i have no idea how to connect it ..can anybody help me ?
  4. Birdie

    555 Timer problem

    hi i just wanna ask about something in the 555 timer... i have a school project which is about a digital clock.. i'm attaching a very simplified out line of the circuits.. i'm not attaching the details... anyway the problem is in the 555 timer ...i think it's not working properly so i just wanna...
  5. Birdie

    74LS160, 74LS47, 555 timer

    hello i'm new here and this is my 1st subject.. I just need the full data sheets of 74LS160, 74LS47 & 555 timer with all the discriptions of the pins & the other stuff. Thanks alot
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