Floppy disk
part · 1971 · Digital age
A flexible magnetic disk.
Developers: Alan Shugart, IBM.
Principles and materials it uses
- Magnetism — uses. Magnetic recording.
- PET — is made of. The disk is Mylar (PET) with a magnetic coating.
- Iron — is made of. The magnetic layer is iron oxide.
History: what it evolved from and what it influenced
- USB flash drive — evolved into. It replaced floppy disks.