Early television pioneers used Nipkov disks to scan images mechanically.

Engineers studied a damaged Nipkov disk to understand the mechanics of early television scanners.

To cover the region efficiently, the algorithm selects overlapping unit disks centered on lattice points.

To illustrate the theorem, she plotted the unit disk centered at the origin and shaded all points whose distance was less than or equal to one.

The museum's computer exhibit still had a working floppy disk drive that visitors could use.

I replaced the old hard disk drive to recover my lost files.

The data center replaced several aged hard disk drives to improve storage reliability.

During the office cleanout, we found three old floppy disk drives hidden in a drawer.

Although most laptops no longer include an optical disk drive, some users still keep external burners for reading old DVDs.

The technician replaced the failing fixed disk drive to recover the customer's data.