Downloading Calco2000 1.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The program is included in Education Tools. The default filename for the program's installer is Calco2000.exe. We recommend checking the downloaded files with any free antivirus. The most popular version of the Calco2000 1.0. The actual developer of the free software is Chris Hall.
From the developer:
Calco 2000 is a free and easy to use calculator developed by Chris Hall.
With calco 2000 you can perform basic operations of arithmetic , the software is free to download and very easy to install and use. You can change the theme of the calculator from red, green, blue or use the default theme depending on your desires.
You may want to check out more software, such as Travoltage or Deming, which might be related to Calco2000.