I remember my Atari 800 with about 8 or 16 k memory, I forget which. Your programs had to be extremely compact and well thought out with nothing fancy. BASIC was the programming language. If you were an expert, you learned machine language. I remember diddling with it for a half an hour in order to get it to make a "beep" sound. When I stored it away, it was still working. The fun part was the game cartridges you could snap into the slot, and play things like Pac Man, Centipede, Missile Command, Asteroids, etc. Your TV was your monitor. I still have all that stuff, and more, stashed away. Computer magazines published the code for programs, which you carefully typed in and saved on cassette or floppy disk. I had a real neat chess game.