Posted by Tom61 on 5, 2000 at 4:06 PM:
In Reply to: PC2JAMMA Question posted by Mike Bissett on 5, 2000 at 10:08 AM:
That circuit is used for keyboards, which lack grounds. The IPAC and other encoders do not need this, because the have a ground.
: On the pc2jamma page it mentions the need of chips to invert
: the signal from the keyboard is this needed with a keyboard encoder
: like IPAC ??