Who needs more than 640k?
My first computer was a Radio Shack Color Computer.
I stayed awake all night knowing that the next day, I had to crack the case and install the device upgrading the memory from 4K to 64K.
Exactly. You could type all day long and never reach that.
I can remember reworking over and over the sequence that we loaded our DOS drivers into upper memory so that our compiled executable BASIC programs would run in the 640K lower memory.
In the early 90s I was working at Motorola in Huntsville, Al. In our Test Engineering department, we jumped from Packard-Bell 8088s to Gateway 486-DXs. It was like going from a Pinto to a Mustang GT.