I don't know what my first one really even was. The first one i every "used" was my Grandpa's when i was 2. The only thing I really remember about our first computer was that it was monochrome, and had a huge orange switch on the back to turn it on/off with.
Then came the rocking x386 machine, and man was that next 75 Mhz Intel fast (I just got my parents off of that one about 3 years ago, though it had been upgraded to a 133Mhz processor along with plenty of other upgrades to get it through the years)