|Best 12C models and how to identify them|
Message #1 Posted by Timo Labrenz on 15 Apr 2012, 4:28 p.m.
Being kinda depressed about the 30b, I've been looking at the different 12C models. I wonder which ones are best and how to identify them. Did I get the facts right so far?
- There are three different 12C models: the original one, the Platinum and the newer Platinum with parentheses.
- The early 12C's have the best build quality and molded keys.
- Later, 12C's have been produced in a variety of countries. Those made in the USA (serial number code "A" or "US") have the best keyboards and overall build quality. Those made in China ("CN" serial number) are usually better than those made in other countries.
- The first 12C took three LR44 batteries and is slow. Later versions use either one or two CR2032 cells. The 2xCR2032 versions have an ARM processor and are very fast (12C+). The single cell ones - I've been told not to buy them? But why...?
- There's a 30th anniversary 12C model. Apparently it's pretty good apart from one curious problem - it's got an outdated firmware that's not free of bugs.
- The 12C Platinum has more functions and memory than the original 12C. While the 12C is RPN only, the 12CP has an algebraic mode.
- Early 12CP's have no parantheses. That changed with the 25th anniversary model.
What to buy:
- You prefer algebraic input over RPN: The new Platinum is the only option. Look for the parentheses!
- You want to be certain to have the best build quality: Get an American made 12C that runs on three LR44 cells. Many of them have been heavily used - look for little wear and tear.
- You want many functions and a lot of memory: Get a Platinum, preferably the new version - it's also faster.
- You want speed: Get a 12C that runs on two CR2032. Try to get one made in China. (Or is there an American 2xCR2032 version?)
- You want your 12C to be new: Get a 30th anniversary model and a data cable to update its firmware.
What not to buy:
- Avoid the earlier 12C Platinum versions (unless you get one for very little money and want to use RPN).
- Avoid 12C's that are not made in the USA or China (A, US, CN) - for example those made in Brazil or Malaysia (BR, MY).
Well, that's it. What are your comments? Am I missing something?
How do you recognise the different models? Are there any tricks? It's easy to distinguish a new 12C Platinum from an old one. But if you want to buy a regular 12C on ebay and all you've got is a photo of the front - is there any way of knowing which version it is?