calc.exe is now open source; there's surprising depth in its ancient code
Microsoft's embrace and adoption of open source software has continued with the surprising decision to publish the code for Windows Calculator and release it on GitHub under the permissive MIT license.
The repository shows Calculator's surprisingly long history. Although it is in some regards one of the most modern Windows applications—it's an early adopter of Fluent Design and has been used to showcase a number of design elements—core parts of the codebase date all the way back to 1995.
(Score: 1, Insightful) by Anonymous Coward on Friday March 08 2019, @10:35PM
So it's not tight code but its UI style, a calculator of all thing.
BIG FUCKING DEAL.
If you want calculator design examples, look to old Casio scientific calculator, or HP calculators for its clean design with tank-like reliability.