The SC-3000 was the computer equivalent of the SG-1000 (Sega’s first video game console). Users were able to create their own programs and games on the machine in BASIC, as well as machine code. A speech synthesis unit, light pen, and several other third party accessories were also available. The SF-7000 added 64KB of RAM and 8KB ROM, a 3-inch floppy disk drive, a Centronics parallel port, and an RS232 serial port.
Auction Here (Thanks Damian!)