That's funny. When I was in college, we didn't even have laptops. They existed, of course (I'm not that old), they were just prohibitively expensive at the time.
When I started University, they didn't even have pocket calculators! But they came out, prohibitively expensive, before I graduated. And then I could finally afford one while I was a grad student.
In fact, they did have portable computers too when I was a grad student, although I couldn't call them laptops. I remember reading about the MCM 70 (a small APL computer; someone here posted a photo of one in a museum) and I remember an IBM salesman coming down to demonstrate the amazing new IBM 5100 computer.
Even when I was born, they already had computers - made from vacuum tubes, yes, but they were electronic computers even with real core memory! So I'm not that
In fact, by the time I was old enough to read, they were using transistors in computers. I remember a picture of an IBM 1401 from the How and Why Wonder Book of Robots and Electronic Brains.