India, April 5 -- Half a century ago, on April 4, 1975, two friends, Bill Gates and Paul Allen, started a small venture that marked the start of a tech revolution. It's Microsoft. As the company turns 50, Bill Gates, who also served as its CEO until 2000, shared a special tribute. He posted a series of rare throwback pictures, which he reminded are from his "awkward photo shoots" days.

The billionaire shared a video that opens to show him sitting on a couch, capturing a selfie. It also has a text insert that reads, "Unfortunately, I'll never feel cool again because this was me in the early Microsoft days."

The video then shows different versions of younger Gates, including some in which he is seen sporting the hot fashion trends of the ...