Family Computer Disk System
The Family Computer Disk System(Japanese:ファミリーコンピュータ ディスクシステムHepburn:Famirī Konpyūta Disuku Shisutemu), sometimes shortened as the Famicom Disk System(ファミコンディスクシステムFamikon Disuku Shisutemu) or simply the Disk System(ディスクシステムDisuku Shisutemu), and abbreviated as the FDS or FCD, is a peripheral for Nintendo's Family Computer home video game console, released in Japan on February 21, 1986. It uses proprietary floppy disks called "Disk Cards" for data storage. It was announced, but not released, for the Nintendo Entertainment System in North America and the PAL region. Through its entire production span, 1986–2003, 4.44 million units were sold.