RE: TI-H: A/B Switch
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RE: TI-H: A/B Switch
Opps... I thought you wantted to make an A/B switch for your parallel calc
link and a EII or something else... Why are you posting off topic? :P
Btw, I can convert the schematic of the TI-85 to Protel 98 format so we
could fabricate our own 85s... THat would be cool. We could use them in
embedded design... ;)
And if we made our own we could add the pads for more memory built in.
Grant
>Well, what I am using it for is to swap between my scanner/printer combo and
>my quickcam. The scanner has a passthrough for the printer. The quickcam
>won't work properly behind the passthrough since the scanner and the
>quickcam both use the TWAIN32 interface. Shouldn't I be able to switch the
>+5v line? So the device that receives the power from the port would be
>working.
>
>| >Generally an A/B switch is used as an alternative to crawling under the
>| >desk to physically unplug one cable and plug the other in. So an A/B
>| >switch should be wired straight-through; in other words, pin 1 to 1, 2
>| to
>| >2, 3 to 3, and so on for how ever many pins your switch has.
>|
>| Generally, a Parallel port switch switches all the lines, else you'd
>| be sending or reading signals from two different parallel devices.
>|
>| DK
>|
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