Floppy Disk Drives
Floppy Disk Drives
The floppy is an external storage device. It is a magnetic round disk enclosed in a plastic jacket. The data is stored on the magnetic surface of the floppy disk drives. You can transmit data from one computer to another by means of a floppy disk. The floppy disk drives drive reads and writes data to a floppy disk.
History of Floppy Disk Drives
Alan Shugart created the floppy drive in the year 1967. The floppy disk for this floppy disk drive was 8 inches in size. This floppy could store data on one side and the floppy disk drive could only read the data from the floppy. The capacity of this floppy was about 100 KB. The floppy disk drive was upgraded to incorporate read and write on the floppy disks. The capacity of the floppy disk also increased to hold 250 KB. Figure 6.1 shows the 8-inch floppy disk.
The size of the floppy disk drives was reduced to 5.25 inches. The disk was similar to the 8 inch disk and could store 160 KB of data. The 5.25 inch floppy was modified to store data on both sides of the disk. This increased the storage capacity of the floppy disk to 360 KB. The floppy disks were of low density. The density of the floppy specifies how the data is stored on the floppy. The more the density of the floppy disk, the closer the data is stored. This increases the amount of data that the floppy disk can hold. The 5.25 inch floppy disk was enhanced and the density of the floppy disk drives was increased. The double-sided high-density floppy disk holds 1.2 MB of data.
The 5.25-inch floppy disk has a Write Protect notch. Covering this notch, by using a tape or piece of paper, protects the data on the floppy disk. As a result, that data is available only for reading. The floppy disk has an Index hole that enables the floppy disk drive to identify the starting sector. The write access part of the floppy disk enable the floppy disk drive head to read from and write data to the floppy disk.
The size of the floppy disk drives further decreased and reduced to 3.5 inches. The thickness of the floppy jacket was increased. Floppy disks of different sizes ranging from 2 to 4 inches were created to compete with the 3.5 inch floppy disk. The 3.5 inch floppy disk was standardized by the industry.
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