User-Writable Media 8 of 14
The earliest video game cartridges were read-only devices. They provided game data, but data generated while playing was lost when players shut off the console. Nintendo first attempted to solve this problem in 1986 by borrowing a page from PCs: It released a unique floppy disk system (2) for its Famicom console in Japan.
Key:  The Legend of Zelda (NES, 1987),  Famicom Disk System (1986),  Nintendo 64DD (1999),  Nintendo GB Memory Cartridge (Game Boy, 1997),  Nintendo SF Memory Cassette (Super Famicom, 1997)