help me ID these cards please

[suprdave@aol.com (SUPRDAVE)]

jut bought a bunch of apple ][ cards, and need help with identifying some.
if anyone tell me what these are or how to use em, that would be great! 

1) 3/4 length card, with two gigantic capacitors on it and one prom, CD
PROM V2.1 ATB   1982  2 16pin sockets.  made by advance business tech,
copyright 1982

2) full length card made by axlon 1981. it has mostly 74lsxxx chips and a
bigger one that says japan 81360y   m58725p  the card also has an led on
it. 

3) full length card made by mpc model? ap-32  it has a connector similar
to a language card and 6 led's labeled cr1-cr6 and has a toggle switch on
the back and an empty 24pin socket

4) short length card labeled grafstar by star micronics. i assume it's a
parallel card, but can it work with any parallel printer?

5) bal 500 eprom programmer. has a funky socket i assume where an eprom
goes to be burned. any software available to run it? 

6) 1/2 length card labled xebec. one chip labeled 103684c copyright xebec
1989  it has 13 resistors in a row, and on the inner edge of the card is a
50pin connector which appears to have 1 pin broken near the middle.  :(

if i dont find a use for the cards once i know what they are, i may
sell/trade.
                                                                         

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