Datasheet legend
Ab/c: Fractions calculation
AC: Alternating current BaseN: Number base calculations Card: Magnetic card storage Cmem: Continuous memory Cond: Conditional execution Const: Scientific constants Cplx: Complex number arithmetic DC: Direct current Eqlib: Equation library Exp: Exponential/logarithmic functions Fin: Financial functions Grph: Graphing capability Hyp: Hyperbolic functions Ind: Indirect addressing Intg: Numerical integration Jump: Unconditional jump (GOTO) Lbl: Program labels LCD: Liquid Crystal Display LED: LightEmitting Diode Liion: Lithiumion rechargeable battery Lreg: Linear regression (2variable statistics) mA: Milliamperes of current Mtrx: Matrix support NiCd: NickelCadmium rechargeable battery NiMH: Nickelmetalhydrite rechargeable battery Prnt: Printer RTC: Realtime clock Sdev: Standard deviation (1variable statistics) Solv: Equation solver Subr: Subroutine call capability Symb: Symbolic computing Tape: Magnetic tape storage Trig: Trigonometric functions Units: Unit conversions VAC: Volts AC VDC: Volts DC 


It is 2016 and I do not often purchase calculators anymore.
Those that were easy to obtain, I obtained. Those that are hard to obtain... well, I obtained most of them anyway. A few will probably be permanently missing, as they are getting harder and harder to find, especially at a reasonable price.
For the longest time, the Casio CFX200 and its cousin, the CFX400 fell into this category. Though they tended to show up on eBay from time to time, prices were exorbitant.
Today, however, I was able to purchase a CFX200 for a more reasonable sum, and I decided to go for it.
So here we are. And what a beauty of a watch this is!
Oh, did I say watch? The CFX200 is a calculator watch. But it is almost unique (again, with the CFX400 being the only other one of its kind) in that it is a scientific calculator watch.
To be sure, it is not a programmable calculator. As such, it is not part of this museum's "main exhibit". But its beauty and uniqueness warrant it to have a page, so here it is.
I can see why this model was discontinued. You almost need a magnifying glass to use it, and teeny weeny fingers (or sharp nails). And its usage is somewhat cumbersome.
Nonetheless... it is, in many ways, the ultimate geek watch. In addition, it actually looks nice (even with more than 20 years of obvious wear) and it's light and a pleasure to wear. Though apparently, finding a replacement battery can be a problem, as the BR2020 battery type is obsolete. (But then, the standard CR2016 type appears to be a perfect substitute.)
I already like this watch so much, I think I might actually wear it... on those rare occasions when I still wear a watch (maybe once in a leap year or so) instead of just using my smartphone to get the time.
I think in this case, the expression "they just don't make them like this anymore" is truly appropriate. I am glad I was able to get one of these units and feature it here.