Look at others before wasting your $$
This calculator is inexpensive and easy to operate, but beyond that it's a piece of junk. I know, I've had three over the last five years. The first one had a key that didn't work. The display on the second one faded away after about a year. I tossed the third one because I had to lean on the keys to get them to operate. The 12c is more expensive and a little harder to operate but far less frustrating.