Rabbit hole: stumbling across two Portuguese punched cards(blog.jgc.org)

173 points by jgrahamc 2 years ago | 57 comments

Cracking an old ZIP file to help open source the ANC's "Vula" secret crypto code(blog.jgc.org)

290 points by jgrahamc 2 years ago | 30 comments

"Hacker News" for retro computing and gaming(blog.jgc.org)

366 points by rcarmo 3 years ago | 117 comments

John Graham-Cumming's blog post announcing Two Stop Bits, a Hacker News-style link site for retro computing and gaming built on modified Arc HN source code.

My primality testing code is faster than Sir Roger Penrose's(blog.jgc.org)

109 points by jgrahamc 2 years ago | 24 comments

The Acme Klein Bottle (From Cliff Stoll and Family)(blog.jgc.org)

62 points by jgrahamc 2 years ago | 12 comments

My 1976 KIM-1(blog.jgc.org)

78 points by jgrahamc 3 years ago | 26 comments