The messaging system that he and a friend created in 1978 was a forerunner of social media services like Twitter, Facebook and YouTube. By Cade Metz Randy Suess, a computer hobbyist who helped build ...
Christensen co-developed the world's very first computer bulletin board system, and also created the popular XMODEM file transfer protocol. When you purchase through links on our site, we may earn an ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results