i have been trying to output a digital value using parallel port. i
know there are two ways to do that. one is to use visa and the other
is portin and portout function. The labview version i am using is 6.i
student edition, so it doesn't support portout with the accessHW
function. therefore i am left with only visa. i have some difficulty
in getting it work. i grounded pin 11 and pin 12, and tried to use a
multimeter to measure the voltage between the one of the data lines
and ground. i thought when i ran the program and adjust the value that
i output to the port, the value i read from the multimeter should
change between 0v and about 5v according to the value i give. but i
never changed, always stayed at 3.3v. could anybody tell me the
possible reasons?
