Ahh, the memories!
The first computer I actually remember using was the campus wide Xerox Sigma 7. Punch cards were the way we "interfaced" with the beast and dropping your deck was truly a nightmare. I hated the punch card machines we had with a passion because they were not buffered. When you hit a key, it punched a hole. If you hit the wrong key, you threw the card away and started over. Man, did I ever throw away a lot of cards!
There were a few interactive terminals around the campus for the seniors, but we freshmen could not go near them. I remember I hated the punch cards so bad that I made a deal with the head of the math department (who, at the time, controlled the computer) to write a trig program in Fortran for his 2nd year class, in exchange for access to the interactive terminals. Hot stuff!! No more card decks!!! Yay! I could compile and debug interactively instead of a half day turn around just for a compile.
Then our EE department had a Mits Altair. I didn't have much interest in playing with it as I was focused on SS physics, analog audio and video communications, etc. Eventually, we got a DEC PDP8, which was cool.
The first computer I actually bought, besides my HP45, was the Timex Sinclair. It was not much more than a toy.
Eventually, I bit the bullet and bought a Kaypro Z80/CPM based machine.
I was able to do so much with that machine. It was awesome. It had 2 x 200k floppy drives and 64k of RAM, and a 1600baud modem. What could a person possibly do with all that memory?
I eventually upgraded to this bad boy which had 2 x 400k floppies and a 3200 baud modem!
I was in good company, Aurthur C. Clarke used a Kaypro to write and collaborate remotely.
I used my Kaypro as a remote terminal to log into computers all across the US and run benchmarks remotely for the company I worked for. As far as I know, I was the only employee at the time who had his own "terminal" or emulator. Plus, with the word processing capability, I could do a better job of communicating with my customers. Ahh, yes, those were the days.
I remember my first encounter with DOS... How primitive it was compared to CPM.
The wrong guys won the battle there, and that's another story.