On Wed, 2004-09-15 at 11:16, Ed Kelleher wrote: > At 05:00 PM 9/13/2004, you wrote: > >When I was designing I/O boards for spaceborne computers I once saw > >what happens when most inputs are left floating on CMOS designs. This > >was a design full of (~30) 54HCxx ICs. > gak! 54xx IC's -- No wonder the space program cost so much! And running TTL off batteries! Ouch!