first commercial interval spreadsheet?

[David Hough]

> Date: Wed, 13 Mar 1996 01:17:16 +0200
> To: reliable_computingainterval.usl.edu
> From: Eero.Hyvonenavtt.fi (Eero Hyvonen)
> Subject: Interval constraint spreadsheets released at CeBIT96
> 
> Dear Colleagues,
> 
> VTT Information Technology releases at CeBIT96, Hannover, March 14-20,
> Range Solver for MS Excel. It is an Add-In package that generalizes MS
> Excel 5.0 (Windows NT) and MS Excel 7.0 (Windows 95) for extended interval
> arithmetic and constraint satisfaction. Range Solver is probably the first
> implementation of interval arithmetic and constraint satisfaction for a
> standard commercial spreadsheet program.
> 
> We invite everybody to visit our stand C65, Hall 003. More information on Range
> Solver together with an order form can be found at our WWW site:
> 
> http://www.vtt.fi/tte/projects/interval
> 
> Yours
> 
> Eero Hyvonen and Stefano De Pascale
> 
> 
> 
> --------------------------------------------------------------------------------
> Eero Hyvonen                                    EMail:  Eero.Hyvonenavtt.fi
> Dr.Tech., Senior Research Scientist             Tel:    +358-0-4566043
> VTT Information Technology                      Fax:    +358-0-4566027
> Information Systems                             Street: Tekniikantie 4B, Espoo
> P.O.Box 1201, 02044 VTT
> FINLAND