| Subject | English | Welsh |
| comp., MS | floppy disk | disg hyblyg (A reusable magnetic storage medium. The floppy disk used today is the rigid 3.5-inch microfloppy that holds 1.44 MB. It is called floppy because the first varieties were housed in bendable jackets) |
| comp., MS | floppy disk drive | gyriant disg hyblyg (A hardware device that reads data from and writes data to floppy disks) |