[comp.sys.ibm.pc] Building Serial or Parallel Peripherals

rgr@cbnewsm.ATT.COM (robert.g.robillard) (08/10/89)

Hi there,

   I'm interested in building a piece of hardware that talks
to my IBM Compatible PC through its serial or parallel port
(I haven't decided which yet)  Can anyone direct me to a good
reference for this kind of thing?  Like, what should it's 
electrical output be?  Or how do you use the port to power the
device (like my mouse does)? 

   Thanks in advance
-- 
|  Duke Robillard                                                        |
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