Combination

[Frodo Baggins]

Hello,I have posted the content of this message in LabView Board but the content is more  related to hardware than to software so I am retyping it here.

 
I am limited with 8 inputs on a speedyboard,am I able to make a combination with these inouts(inorder to be able to "increase" the "limited" amount of inputs"?[Each input takes true or false]

Thanks in advanced.

RTSLVU  has writen:

I am guessing your "speedyboard" in an 8bit digital I/O?

 

Right off the top of my head I would say you could design some external circuitry to multiplex the single port.

 

Now you would have to give up two data lines and use them as address lines and one as a R/W line

 

Then using bidirectional three state latches expand it out to 20bits of I/O.

 

You might want to look into Measurement Computing's USB DIO products. They have a 24bit (3x8bit) USB DIO for $99

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 I have speedy-33 which has 8 analog inputs(switches) and 8 analog outputs(LEDs), so what is the name of the  product we could add to increase the number of inputs and outputs.Does National Instruments have such a product?

If they don't,do you know any link that will  explain and clarify the steps that you stated ?

 Thank you very much 

I am sorry to have post it in a different Board,but my post is more hrdware related.

I am sorry if it is posted in the wrong Board again.

The link to my first post is:

http://forums.ni.com/ni/board/message?board.id=170&thread.id=464621&jump=true

 

[Stefo]

Hi Frodo,

You are right about that this post is not really LabVIEW post, but to dissapoint you even more, I don't think it is Instrument Control either 

Maybe you could erase one of them (probably this) by reporting it to moderator