Sega SC-3000
The SC-3000 was the computer equivalent of the SG-1000 cartridge-based gaming console manufactured by Sega.
The SC-3000 sold for ¥29,800 in 1983 and was marketed as a computer for beginners. Since games were compatible with both the SC-3000 and and SG-1000 and since the SC-3000 was also able to run computer applications, it outsold the SG-1000.
Users were able to create their own programs and games on the machine. The Speech Synthesis Unit, the Light Pen, and several other third party accessories were also available.
The [[SC-300H], which originally sold for ¥33,800, was an upgraded version of this system with more RAM and an upgraded keyboard.
The SC-3000 had an extension called the SF-7000. The SF-7000 added 64kb RAM and 8kb ROM, a 3 inch floppy drive, a Centronics parallel port, and an RS232 serial port.