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[DPRG] tutebot brain breadboard layout question

Subject: [DPRG] tutebot brain breadboard layout question
From: Jim Brown jim_brown at adc.com
Date: Wed May 17 10:17:11 CDT 2000

olio wrote:

> Shea.DAVIS at st.com wrote:
> >
> > Miguel,
> >         Try runing the signal through an AND gate.
>
> in theory, i know what an AND gate is... but i'm new to electronics  and
> i dont' know how to make it...:^(  --i know that sounds lame-o--
>
> do you use transistors for AND gates?  (i honestly have no idea)
>
> can you send me a circuit that could help demonstrate?
>
> thanks lots for replying
> miguel

                7400
  inputs     +------+
             |      |
    A   -----|      |------ output
             |      |
    B   -----|      |
             |      |
             +------+


             A   B   output

             0   0   0
             0   1   0
             1   0   0
             1   1   1



So only when A AND B are high will the output go high.
That is an AND gate.


You could use transistors, but most people would
go with the IC since it's so much easier and cheap

enough.

You should find a good IC parts book on the 74 series

of ic chips.

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