The floppy disk is a storage medium that played a significant role in the evolution of personal computing. Here's a brief history:

1. **Inception (Late 1960s - Early 1970s):** The precursor to the floppy disk was invented by IBM engineer Alan Shugart in the late 1960s. It was a flexible "memory disk" called the "floppy" because of its flexibility compared to the rigid disks of the time.

2. **8-inch Floppy Disks (Early 1970s - Late 1970s):** IBM introduced the first commercial floppy disk drive (FDD) and 8-inch floppy disks in 1971 as part of the IBM 23FD. These disks had a capacity of 80 kilobytes (KB).

3. **5.25-inch Floppy Disks (Late 1970s - Mid-1980s):** In the mid-1970s, Shugart Associates introduced the 5.25-inch floppy disk, which became the dominant form factor for personal computers throughout the 1980s. These disks had capacities ranging from 160 KB to 1.2 megabytes (MB).

4. **3.5-inch Floppy Disks (Mid-1980s - 2000s):** Sony introduced the 3.5-inch floppy disk in 1981, but it wasn't until the mid-1980s that it gained widespread adoption. These disks were encased in a hard plastic shell, offering better durability and higher storage densities. They had capacities ranging from 400 KB to 1.44 MB.

5. **Decline and Obsolescence (Late 1990s - Present):** The rise of higher-capacity storage technologies, such as CDs, DVDs, USB flash drives, and cloud storage, rendered floppy disks increasingly obsolete. By the late 1990s and early 2000s, most computers no longer included floppy disk drives as standard equipment.

Despite their eventual obsolescence, floppy disks played a crucial role in the early days of personal computing, providing a convenient means of storing and transferring data. They were widely used for storing operating systems, software applications, and personal files before the advent of more advanced storage technologies.