Re: Please Help Identify This Card Time!

[Rubywand <rubywand@swbell.net>]

Alan Tuttle writes ...
> 
> Okay, everyone! I have another Apple II card I haven't the foggiest
> idea what it is and what it does!
> 
> http://www.macgeek.org/identify/unknown00.jpg
> http://www.macgeek.org/identify/unknown01.jpg
> 
> A couple of things about this card... I bought a Platinum Apple IIe,
> and this card was in it. The computer was previously used in an
> educational institution. It has a DB-9 female port, and three ICs
> marked 74LS244N, 74LS155AN, and SN74LS27N. On the chip side, it has the
> company name "Advanced Business Technology, Inc.". On the backside of
> the card, it has the number 1006D, and the text "TELTEC 01V 1587".
> 
> Any idea what it is? Please let me know! Thanks! :)

     Good pics. It's nearly possible to diagram the circuit.

     Whatever it is, the card sends out +5V and GND which could be used to power a
connected device. There is one signal line (Green wire) which seems to go to an
Input, Output or both on the 74LS244. (For example one Input would be pin 13; an
Output would be pin 14.)

     The card could let you turn something ON/OFF or run something like a slide
projector. If the signal line goes to an input, it could let you monitor anything
from a pushbutton to a tape output or digital output of some instrument.

     Since there is enough circuitry for one line of serial I/O, a 'smart' connected
device could do all sorts of things.



Rubywand