Summary: I am in the engineering field and use a calculator all day, everyday. I had the previous model to this one and loved it. The DMS to DD is the one thing Sharp has that I have trouble finding on any other calculator. This is a duplicate of my original Sharp except for the case. Love the calculator, hate the case! The case is hard to open and close.
Summary: No POS is not a math term. This calculator is a piece of #$%^. Unless you are an engineer or have access to someone who can explain to you why when squaring the sum of two exponents you need a bevy of parentheses you are wasting your time with this. The manual is pretty much a joke being that nothing is explained to any degree. For what it it worth you are better off buying a graphing calc for anything real and a simple calc with DMS for trig.
Summary: Well, it worked for sixteen months before numeric keys 5 and 6 stopped working -- four months beyond the warranty limit. When comparable Sharp calculators were still made in Malaysia they were excellent. Granted, this one may have more features but what good is it with two bad keys? I probably will not buy the Sharp brand again if I have a decent alternative.
Summary: I have a private tutoring business. I use this calculator in my business and like it so well that I actually buy them for the people that I work with and give them out. This calculator does so much. It will take you all the way through statistics and calculus. The batteries last a very long time. It isn't difficult to use. One thing that sharp could do is include more than just a pamphlet(although it is a HUGE one)with the calculator.
Summary: It's a working calculator that gets the job done. The screen is very "bright" the numbers are kind of dim. I really prefer Texas Instruments calculators, but this calculator works fine. I bought it because I needed a non-graphing scientific calculator to use on Precalculus tests.
EL-506WBBK Pocket Calculator Does More Than I need!
David Locher "DHL-EE", Amazon
11 April 2009
Summary: I am a practicing Electrical/Electronic Engineer and have had a Sharp EL-506 for eons that still works and is no bigger than 3" X 5" notecard. The EL-506WBBK is bigger but just manages to fit my shirt pocket. This calculator has approximately 470 functions and short of lengthy formulas covers statistics, trig/calculus, polar/rectangular conversions, and on and on. I will probably never use all of its features. Ten digits plus two exponent digits gives plenty of accuracy.