how to progam a 8 to 1 multiplexer

Archiver

hey

this is kristof from Belgium and I'm in my senior year electronics
and I have to make a work about The BS1. I want to make a robot with
sensors, remote control and 2 DC-motors the first 2 take 6 pins and
becaus of that I use a 8 to 1 multiplexer.
the only problem is program it.
so if you can help me any help is welcome

thanks

kristof van laecke

Archiver

Zeurlapsje.

--- In basicstamps@yahoogroups.com, "kristofvanlaecke"
<luc.vanlaecke@s...> wrote:
> hey
>
> this is kristof from Belgium and I'm in my senior year electronics
> and I have to make a work about The BS1. I want to make a robot
with
> sensors, remote control and 2 DC-motors the first 2 take 6 pins
and
> becaus of that I use a 8 to 1 multiplexer.
> the only problem is program it.
> so if you can help me any help is welcome
>
> thanks
>
> kristof van laecke

Archiver

To control an 8 to 1 multiplexor you will need a minimum of three output pins
from the stamp.

The general idea is as follows:

Three binary lines can give you 8 different combinations, and that is what
will allow you to select one of 8 lines.

If you use for example a MC14512, and tie pins Inhibit and Disable low, then
using three control lines you can select one of 8 inputs to show up at the
output, Z.

Inputs A B C....Output Z (X0 through X7)
000...X0
001...X1
010...X2
011...X3
etc
111...X7

Ken


[noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

In a message dated 4/6/2003 7:11:40 AM Pacific Daylight Time,
smartdim@a... writes:

> If you use for example a MC14512, and tie pins Inhibit and Disable low, then
>
> using three control lines you can select one of 8 inputs to show up at the
> output, Z.
>
> Inputs A B C....Output Z (X0 through X7)
> 000...X0
> 001...X1
> 010...X2
> 011...X3
> etc
> 111...X7
>
> Ken
>

Please let me clarify....as the above does not read correctly......
A, B & C are control lines. X0 through X8 are the inputs, Z is the output.

Depending on the binary combination on the control lines ABC, it will give
you one of the inputs X0 ~ X7 on the output, Z.

(I should proof read my posts before hitting send!!!!!!)

Ken


[noparse][[/noparse]Non-text portions of this message have been removed]