Disk and floppy disk

Users questions: What is the difference with the floppy disk? Disk is which?
Experts answer: disk, it should be hard and floppy disks of the "known." Common hard drive, to be exact, it should be called "hard disk", it's disc is a complex magnetic alloy film coating on the coating produced. Aluminum is of course hard, not collapsible curved. Soft Disk, floppy disk should be called, is an ordinary 3.5-inch floppy disk (in the past with 5.25-inch, 8-inch floppy disk), the floppy disc is made with polymer materials, the top magnetic layer coating compound. Similar to the plastic film the same, you can bend the disc, so it is called a floppy disk. You find an abandoned 3.5-inch sheets Floppy disk, open its shell, a look at that disc you will understand. Usually that's hard, is to string a few pieces at a shaft aluminum disc, the disc outside the sealed box. High-speed motor driven by the rotation. It can not take the disc out. Stuck to the middle of the two heads to read and write data discs. This shows that the hard disk Head, and head servo control circuit, are related to the disc, as with the motor. Sealed with a shell in the yard. Capacity so it can be used thousands of times in the floppy disk. Read and write speeds, far faster than floppy disks. The floppy disk is not, it is only one disc, packed in a plastic case, the he will not turn, when used Climate, we should insert a disk into a drive going, but this drive is the motor, head, head servo control circuit composed of a shell closure in the yard, installed in the machine. After inserting the disc, close the door (actually is a small handle), and down there will be two press plates, press and hold the disc center, the two pressure Disk rotation time on the driving disc rotation. The head is also a disk on each one to read and write data before and after the event. As the floppy disk of this structure, but the disc is soft, it can not rotate too quickly, and all institutions are exposed to the air, and therefore, it is very slow read and write data. Now Basic is not used. Only a few special old machines, still using an ordinary 3.5-inch floppy disk. The new machines have not installed the floppy drive a. In the past, if someone says "disk", you have to ask clearly for floppy or hard disk. But now, because basically no floppy, if no one say "disk "So generally refers, we are all hard drive.
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