First computer that I was exposed to by brand was a Commodore 64. We never actually owned one, but one of my uncles did which is where I was first exposed to computers.
The first computer that we were actually able to own in our home was some IBM PC clone with a 386SX at 25 MHz, 2 MB of RAM, one 5.25" and 3.5" floppy drive, and probably one 20 MB IDE HDD. I think the system had VGA built-in from the get go. We expanded it some years later with a Sound Blaster Pro 2.0 and one of those cheap and slow 2X CD-ROM drives. Eventually, we got rid of that system and brought a brand new computer once Windows 95 hit the scene. Mainly spent a lot of time messing around with shareware games from Lucasarts, Apogee, and Epic Megagames.