dm319 Karma 2,453 Created 8 years ago Recent Submissions 1. ▲ The R47: A new physical RPN calculator (swissmicros.com) 196 points · 1 month ago · 113 comments 2. ▲ E⁻¹= E⁻ᵉ↑↑∞ (math.stackexchange.com) 2 points · 2 months ago · 0 comments 3. ▲ The Strange Case of the Rogue HP-12c Calculator (dm319.github.io) 119 points · 1 year ago · 32 comments All submissions on HN · View profile on HN