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Computer Modules - IBM, circa 1965
1950's tax preparation: plugboard programming with an IBM 403
Apex Plus PoE-GigE-48 Installation – Trango Support
Examining the core memory module inside a vintage IBM 1401 mainframe
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe
About the Computer History Museum’s IBM 1401 Machines | @CHM Blog
South Africa’s first computers
Bad relay: Fixing the card reader for a vintage IBM 1401 mainframe