The 4-Bit Microcomputer Kit from the Maker Shed features a 20-key keypad, a 7-segment LED, and 7 individual LEDs. It comes pre-programmed with 7 different applications, and you can even program your own via the keypad. It’s a fun retro kit, just begging to be hacked! Don’t forget to check out Gakken magazine 4-bit computer rollout party in Tokyo.