Bring Back the  

What is an HP 15C?

Since a picture is worth a thousand words, lets start there.

For more on the history of the HP 15C go to the HP Museum

For a detailed list of its capabilities look at the HP 15C Features page at the HP Museum

The HP 15C was one of five calculators in the 10C series that were made from 1981 till 1989 (except for the 12C which is still being made after over 20 years). It's siblings are the 10C, 11C, 12C and 16C, all of which use RPN instead of algebraic entry. The 10C and 11C were both scientific calculators like the 15C, though not as powerful. The 12C is a financial calculator. The 16C was the first and only HP calculator designed for the computer scientist, with features like binary, and hexadecimal conversions along with many other functions useful to a computer scientist.

At only 5" (127mm) long by 3.15" (80mm) wide by 0.6" (15mm) tall, the 10C series calculators are the smallest RPN calculators HP has made. This the perfect shirt pocket size. Battery life is long, it is not uncommon for a 10C series calculator to go years before needing new batteries.

The 15C was the most advanced scientific calculator in the line. It was programmable, had built in support for complex numbers, matrix math, numeric integration, and root solving. Like most other HP calculators it had a very nice keyboard with a positive feel and easy to press keys. The layout was well thought, which made it easier to use. Unlike the calculators built today, the 15C has a simple elegant design. This design quality is, I believe, the reason the 12C is still being made today.

Go To the Petition the Petition

4801people have signed the petition so far.


Please add a link to this site on your site. Email the with any comments.
This, and all properly designed web sites, best viewed with Firefox!
Get Firefox
Save the web! Drop brain dead IE, and Get Firefox

Gift giving made easy with The Wish Zone
Get the gifts you want and give the gifts they want!
One stop wish list for any gift, from anywhere, for any occasion!


Loans are usually known better for their long procedures that you should always follow in order to get them. However, it should not be the case when it comes to cash loans as they are so easily obtained by simply going to the lender in person and making a few inquiries.

The fact that these loans are so common and highly sought after has never given them any kind of complexity whatsoever. They still remain simple as they originally were and that is one feature they boast of.

When you feel that you really need money but the financial trouble you, there is usually an easy way out. The only easiest and most convenient option is applying for the cash loans that are usually offered by many lenders all over the world. These loans are very common that they are available in whichever place on the globe. They are usually highly preferred by clients to any other type of loan.