It Would Take This 50-Year-Old NASA Computer More Than a Quintillion Years to Mine a Single Bitcoin Block

Ken Shirriff is a hardware hacker who also has a penchant for restoring old computers, including the Xerox Alto, which had a huge influence on Steve Jobs and the Macintosh computer. His latest project was bringing one of NASA's Apollo-era guidance computers back to life, but without a visit to the Moon on his horizon,...