On Tue, 2011-10-18 at 10:13 -0700, Brian Mury wrote: > You should see +12 volts or -12 volts (actually anything between 3 and > 15 meets the spec, but you'll usually see somewhere around 12). > Negative voltages are high, positive voltages are low, Other way around... A high (digital 1) is a positive voltage, a low (digital 0) is a lower or negative voltage (i.e. less than the 1's voltage, whether it be zero or below zero). All digital logic is this way. There are cases where the low signal is the active state (i.e. a 0 is true and 1 is false), called "negative logic," or "active low," but it's still a case of 1's voltage is greater than 0's. It's the meaning of 0 and 1 that's inverted. -- [tim@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
