Fun facts, TK Solver or TK!Solver original developer is Milos Konopaseka a textile engineer from from Czechoslovakia.
TK Solver is a software cousin of the infamous VisiCalc, developed by the same company Software Arts.
VisiCalc has been discontinued but TK Solver is still being sold today by Universal Technical Systems (UTS) [1].
Milos also developed the Question Answering System (QAS) running on a PDP-10. It operates on equations relating input yarn, cloth area, fiber strengths, etc. For a desired cloth strength, you could solve for fiber strength, or given fiber strength, you could solve for the cloth strength. The same operations you can still perform in TK Solver.
[1] Comprehensive Mathematical Software Tool for Engineers:
TK Solver is a software cousin of the infamous VisiCalc, developed by the same company Software Arts.
VisiCalc has been discontinued but TK Solver is still being sold today by Universal Technical Systems (UTS) [1].
Milos also developed the Question Answering System (QAS) running on a PDP-10. It operates on equations relating input yarn, cloth area, fiber strengths, etc. For a desired cloth strength, you could solve for fiber strength, or given fiber strength, you could solve for the cloth strength. The same operations you can still perform in TK Solver.
[1] Comprehensive Mathematical Software Tool for Engineers:
https://www.uts.com/Products/TKSolver