I co-owned (with my younger  brother) an Apple II with 16 K of addressable memory, fixed-point basic, four-color "high-res" or 16 color (low-res) graphics, using a Radio-shack cassette recorder for secondary storage, a pixiverter to connect to channel 3 or 4 on a TV (later pixie-verters connected in the UHF band to avoid interfering with neighbors), and two paddles for gaming action. The serial number was in the three hundreds. It was sufficiently early in the production run that they hadn't started putting the "shark-gill" vents on the case, so it tended to build up heat -- when it did one of the ICs in the motherboard would pop up, and something strange would happen to the programs. (Two of the letters were replaced -- I think p became h, and m became v). This happened with distressing frequency. My brother eventually bought a joystick for it (the one that looked like an apple), more memory, a floppy drive, and a 9" monitor. Then it caught on fire and the motherboard melted.