SC-3000
From Sega Retro
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 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 original keyboard was of the low-end membrane type), so the upgrade was sorely needed.
The SC-3000 had an extension called the SF-7000. The SF-7000 added 64KB RAM and 8KB ROM, a 3-inch floppy disk drive, a Centronics parallel port, and an RS232 serial port.