Name that calc

[Rick Bensene]

It's a Deitzgen ESR-1.    As your page says, it's an OEM version of the
Casio fx-1.  Casio sold the machines to Deitzgen, who just put their own
modem/name/seria number tags on them, and was responsible for marketing
and maintaining the within their marketplace.  Sperry-Remington also
OEM'd the Casio fx-1, and sold it under their brand name as the 1259S.

Quite an interestng machine.  It is essentially a basic four function
calculator with square root, that added ROM-based "programs" using the
besic functions of the machine to carry out the scientific functions.
Some of the functions are very slow as a resylt.  You can learn more by
reading
My exhibit on the Casio fx-1 at
http://oldcalculatormuseum.com/casiofx1.html 

Rick Bensene
The Old Calculator Museum
http://oldcalculatormuseum.com

> -----Original Message-----
> From: cctalk-bounces at classiccmp.org 
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Jason T
> Sent: Sunday, July 29, 2007 9:34 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Name that calc
> 
> I was reviewing my small calculator collection tonight and 
> unboxed this old thing:
> 
> http://www.flickr.com/photos/chiclassiccomp/946510637/
> 
> I've had it for at least ten years and had nearly forgotten about it.
> It's a Dietzgen with Nixies, it's got "scientific" functions, 
> and takes a standard power cord.  That's about the extent of 
> my knowledge.
>  Anyone know the model number on it, or other interesting details?
> 
> TIA...
> 
> -j
>