Simple Question-AND gate

Discussion in 'Homework Help' started by feli, Apr 24, 2011.

  1. feli

    Thread Starter New Member

    Apr 24, 2011
    6
    0
    Hi everybody,

    I am new to this forum and also to digital world. This is my first question.

    Could you please tell me how I implement AND gate? (transister needed?)

    Thank you
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    This is a situation where Wikipedia works. The kind of logic would help, too. The one shown in the link is different from an RTL gate, or DTL, or TTL.
     
  3. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    A very simple AND gate can be created using only diodes and one resistor. One end of resistor tied to Vcc, diode cathodes tied to resistor. Output is taken from that junction and inputs are placed on diode anodes. If any anode is at ground, output will be 0.7v. All inputs need to be hi for output to be hi.
     
    Last edited: Apr 26, 2011
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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  5. Georacer

    Moderator

    Nov 25, 2009
    5,142
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    I prefer CMOS technology. I know it doesn't have any transistors, but from the OP, it didn't seem mandatory.

    Google's first result: Your trusty AAC!
    [​IMG]

    EDIT: When I said CMOS technology doesn't have transistors, I meant BJT ones.
     
    Last edited: Apr 26, 2011
  6. Wendy

    Moderator

    Mar 24, 2008
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    2,536
    I like RTL myself...

    [​IMG]
     
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