12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe

mandelbrot-1041-and-printer

Ken Shirriff writes:

When I found out that the Computer History Museum has a working IBM 1401 computer[1], I wondered if it could generate the Mandelbrot fractal. I wrote a fractal program in assembly language and the computer chugged away for 12 minutes to create the Mandelbrot image on its line printer. In the process I learned a bunch of interesting things about the IBM 1401, which I discuss in this article.

Details at Ken Shirriff’s blog.

Join the Conversation

1 Comment

Leave a comment

Your email address will not be published. Required fields are marked *

Notify me of followup comments via e-mail. You can also subscribe without commenting.