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[DPRG] tutebot brain breadboard layout question

Subject: [DPRG] tutebot brain breadboard layout question
From: Ralph Tenny rten at metronet.com
Date: Wed May 17 15:40:21 CDT 2000

A 7400 is a NAND gate. I believe the AND gate is a 7408.
Ralph

On Wed, 17 May 2000, Jim Brown wrote:

> 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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