Even as he grows older, Microsoft founder Bill Gates still fondly remembers the catalytic computer code he wrote 50 years ago that opened up a new frontier in technology. Although the code that Gates printed out on a teletype machine may look crude compared to what's powering today's artificial intelligence platforms, it played a critical role in creating Microsoft in April 1975 — a golden anniversary that the Redmond, Washington, company will celebrate on Friday. Gates, 69, set the stage a...