I remember mine well from growing up in the 70s and 80s.
One of my first was a Texas Instruments TI-99/4A. I remember typing in what seemed like endless lines of code from magazines for games they'd feature. It was good fun but there was always a little sense of disappointment when the game and graphics didn't quite live up to the pictures and artwork in the magazines.
I remember the cartridge games too - Parsec, Munchman, Alpina, The Attack, Blasto - there were loads.
I also had a Spectrum+ and an Acorn Electron. At school we used BBC Microcomputers, but they were expensive at the time.
I have fond memories of the 80s, and I couldn't see a lot of kids these days entering lines and lines of program code to get a game working on the Wii or PS3!!
I had a few others too, including a ZX81 and an Aquarius.
Good times.