Sony Introduces First 3.5-inch Floppy

Sony unveils its prototype 3.5-inch floppy disk and drive, initially offering a capacity of 437.5 KB (single-sided). It features a revolutionary hard plastic shell.

Significance

This marked the initial public appearance of the format, showcasing its innovative, durable design and setting the stage for future standardization efforts.

Key facts

Date
1981-06-01
Type
invention
Location
Tokyo, Japan