Birthday of Pong
The guy on the TV tells me that Pong appeared on the market today in 1972.  My fond memory of Pong.  A professor at the college I attended was exemplary in asking students to his home.  He had a Pong game on his TV.  Most of us didn't play it:  we just watched it, fascinated that we could control something on the TV screen.    Pong was unblievably simple by today's standards:  literally just a ball bouncing back and forth against two moving "paddles."  Compared to what goes into video games today, it's laughable, of course.  But in 1976, we sat mystified.