02-15-2000, 08:59 PM
A friend of mine just gave me an HP 18C (no manual). It checks out fine on the self test, but I can't adjust the display contrast by holding the on key and pressing + or - like I can on my 19B. Can anyone tell me if the 18C's display is adjustable for contrast? Was this one of the features left out to make it less expensive than the 19B?
Thanks