(There's no video for Professional System for Circuit board layout and manufacturing yet. Please contribute to MR and add a video now!)
This includes 3 applications from the Professional System for Circuit board layout and manufacturing software suite sold by Douglas Electronics in late 1980's:
This is version 1.2. It lets you build electronics schematics and even virtual tests in real time. You can click logic doors and switches on the schematics to see how the current/voltage changes. It can display some label colors too.
Included in the download is also the Professional Layout and Pen from the Douglas CAD/CAM system, version 5.2 from 1988.
Douglas_CAD-CAM_1.2.sit (1.19 MiB / 1.25 MB)
Douglas schematics tools v1.2 + CAD/CAM system v5.2 / compressed w/ Stuffit
This probably runs on any 68K or PPC Macintosh computer ever made.
It's tested and working in SheepShaver under Mac OS 9.0.4.
Also works under BasiliskII with OS 8.1 or 7.0.1, and vMac with 6.0.8
Emulating this? It should run fine under: Basilisk II