//Simple to Complex: a Hard Disk Device

Simple to Complex: a Hard Disk Device

One of the main components of any computer is the hard drive (e.g. Lenovo X200 hard drive). This device is also known under the slang name “screw”, “broom”, “” hard drive “,” hard “. The latter owes its origins to the English name- Hard Drive Disc (HDD), in Russian colloquially shortened to “hard” Winchester is a unique repository of information, data which, in contrast to the memory are retained even if power is turned off completely. To a certain extent, can serve as an analog of the old video and audio tapes in which the magnetic film performs the same function as the disks in hard drives. And if you want to change the hard drive of your laptop, you can get the hard drive or any other Lenovo laptop replacement parts at banggood.com for a good price.

There is no doubt that many computer owners would like to know a hard disk device. What’s clicks inside when turned on, why there chirping sound when the active read / writes data, and so on. And in the case, there is a window of unknown purpose. There are many questions, but the hard drive and the device remains a mystery. In this article, we want to shed light on some key points. Besides, perhaps, a curious user who decides to start their own drives with disassembly repair housing, think ten times about the feasibility of this and contact the service center. Covers all existing hard drives are made of metal. On the underside of the board, electronics are available. Chips can be soldered to both the outer side (the old model), and the inner. On the performance is not affected, except that accidentally hurt the protruding chip with an internal arrangement impossible.

Hard disk device involves placing on the card controller (MCU), the buffer memory chip (the usual DDR), the control module reads the (recording) head – VCM, ROM memory control firmware and a protective diode (TVS). The board is connected to the internal housing elements (tight area) copper clamping contacts. Of course, the hard disk device cannot be understood without removing the (real or mental) top cover. Inside on a single spindle motor (from 5,400 to 15,000 revolutions per minute, depending on the model) hosts several CDs from a nonconductive material. On their surface coated layer: remember cassette – there was the foundation of the polymer tape. Each disc is placed in a special aerodynamic arc forming the desired air flow. The frame, which is placed at the ends of the head, in the off position is fixed in a special parking area outside the disc surface via the latch and (or) of the magnet. After spindle promotion creates airflow VCM card unlocks the frame and displays it in the working position. The head is not touching the disc surface and fly over them on the cushion of air.

By the way, if you disable the rotational energy is sufficient for power generation current, sufficient to bring the heads in the parking area (about 20-30 years ago, it was necessary to launch a high-level parking program). Thus, there is no vacuum within the hard drive, and “windows” in the housing are needed to equalize the pressure inside and outside. Of course, the air inside is substantially free of dust. The chirping of the active use of the hard drive occurs due to repeated head positioning to the desired section of the disc (track). Well, a soft click when the lock can be caused by the removal of the parking areas or self-test limits. Incidentally, the external hard disk device is exactly the same.