I worked on the computer staff at Bradley University in 1962 when I was a sophomore. Our main computer was an IBM 1620 with a whole 16K (that's K, not M) of memory. It was the size of a small car. I learned Fortran - punched cards in and out. No tape, no disk. I also learned and taught Basic as a grad student.
In the 60's and 70's, I did quite a bit of application work on Burroughs B5500 and B6700 mainframes. We had moved up to teletype input and line printer output.
In 1982, the company I worked for equipped most of us with the first IBM PCs - with a mind-boggling 64K on board. Our main applications were Basic and VisiCalc.
The PC sitting on my desk now is more powerful than the Burroughs B6700 mainframe that did all our corporate systems and accounting back in the day.