Posted by Jon Richards on January 17, 2001 at 22:18:10:
Most financial calculators come up with the right answer, but the HP and TI are the most commonly used in the real estate industry. The HP 12-C is old technology, and has some built in problems, is slow, and the reverse polish notation is difficult for some people.
The Real Estate Master, and some Casios, and Radio Shack calculators are not standard either, and have modes that make them difficult to use as well. So stick with the $30 financial calculators by Hewlett Packard or Texas Instruments, and you will be fine and in the mainstream.