Lord, am I getting old! ;-)
Seriously, it has been one hell of a trip from the four-function calculators that couldn't replace my Post Verslog and CRC Math Tables in undergrad school to the laptop my son takes for granted now to do his high school homework and research!
Me too. While I graduated high school later than some of these machines, my first computer was a TRS-80 Model I with 16K of RAM and a cassette drive.
I've watched the progression of computers since the late 70s and am still amazed at what they are capable of doing.