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.

It's "the coolest code I've ever written," the Microsoft co-founder says.

The coolest code I’ve ever written.” With these words, Bill Gates introduces a blog post that celebrates Microsoft’s 50th anniversary by looking back on how the company got started. At the bottom of the that blog post,