Websites like , SourceForge , or Google Code Archive sometimes host open-source mirrors of old educational software. Look for repositories named “Microwind_3.9_Setup.exe” with a high number of downloads and positive comments.
Microwind 3.9 is a comprehensive software package used for designing and simulating integrated circuits at the physical level. It allows engineers and students to draw CMOS layouts, simulate their behavior, and verify timing and power consumption. microwind 3.9 download
