Alt-BEAM Archive
Message #01158
To: beam@corp.sgi.com, "'Keagan Schpfer'" keaganschopfer@hotmail.com
From: "van Zoelen, Bram SSI-TSEA-352" Bram.A.A.vanZoelen@is.shell.com
Date: Tue, 2 Mar 1999 09:21:05 +0100
Subject: [alt-beam] Re: More Questions
> ----------
> From: Keagan Schpfer[SMTP:keaganschopfer@hotmail.com]
> Reply To: Keagan Schpfer
> Sent: Tuesday, March 02, 1999 6:03 AM
> To: beam@corp.sgi.com
> Subject: More Questions
>
> I have some more questions that i would like to know the answers to:
>
> 1) I have been noticing that when people want more current, they will
> stack the 74hct245's. Why is this? Why don't you put them in parallel?
> Would that lower the current gain?
>
---
What would you think you do if you stack them?
---
> 2) Also, I have a couple of DM74LS240 Octal 3-state Buffers/line
> driverrs. Would I be able to use these to drive motors?
>
---
Yes
---
> 3) What exactly is a multiplexer. I think it has something to do with
> reversing your bot, but I don't know for sure.
>
---
Roughly said
A multiplexer put the info from two or more lines [parallel] behind each
other [serie] so
it could be send over a single line.
---
> 4) I am still unclear what Nu nurons or Nv nurons are. I have the paper
> Living Machines, but I wasn't able to gather enough from just that.
>
---
Maybe the FAQ will help you here better.
---
> 5) I know that this has already come up, but how can I identify SMT
> componants. I have a board with a whole bungh of SMT componants on it.
> Can I just heat the other side of the board to unsolder them?
>
---
Yes
If they still will function? I don't know.
---
> Thanks
>
> KEagan schopfer
>
> P.S. I am sorry about that e-mail mess, but Hotmail isn't very good.
>
---
No problem
Bram
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