At the age of 4 (1989), I got my first computer, the Tandy 1000HX . It had (IIRC) MSDOS 3.xx, 1 3.5'' floppy drive, no hard disk, 640k of RAM, and EGA graphics. I played a lot of King's Quest, Carmen Sandiego, Reader Rabbit, Midnight Rescue, and Quest for Glory.
I think I got the NES around...