Datasheet Oct 1998...
Mentioned in 1997...
http://www.jameco.com/Jameco/Products/ProdDS/288121-DS02.pdf
Mentioned in 1996...
http://www.seattlerobotics.org/encoder/jun97/classics.html
Datasheet May 1995...
I'm going with 1995.
Datasheet Oct 1998...
Mentioned in 1997...
http://www.jameco.com/Jameco/Products/ProdDS/288121-DS02.pdf
Mentioned in 1996...
http://www.seattlerobotics.org/encoder/jun97/classics.html
Datasheet May 1995...
I'm going with 1995.