How to recover damaged data and HD?

The hard disk is the leading media existing storage on a computer. Although modern hard disks are formidable means of data storage in an increasingly sophisticated and reliable technology tools can not exclude the possibility of damage or problems with the hard drive and it can be a cause of data loss.
There are situations that can be a symptom of a problem and the hard drive can result in data loss. In the presence of a damaged hard disk, for example, may be unable to read the contents of the drive, access files, folders or partitions, or can listen recurring and unusual noises, there may be a lack of data and files, etc.
Faults and malfunctions of a hard disk can be of different types. Can be distinguished in this respect:
The damaged hard drive due to physical damage (electrical and mechanical defects)
The damaged hard drive due to failure of logic (logical errors), ie damage to files stored on HD or OCD, a table listing the contents of the HD and the physical position of them in HD

What is Firmware?
The set of operating instructions programmed directly on the hardware of an electronic device. It is permanently stored in an integrated circuit (chip) memory hardware such as a ROM, PROM, EPROM or EEPROM and flash memory at the time of manufacturing the component. Many simple devices have firmware, including: remote control, handheld calculator, some parts of the computer like hard drive, keyboard, memory card, many scientific instruments and robots. Other more complex devices such as mobile phones, digital cameras, synthesizers, among others, also have a firmware for the execution of their tasks.

As a HD work?
Inside the hard drive, the data is recorded on magnetic disks, called platters. The name "hard" comes precisely from the fact that the internal disks are extremely rigid.

The platters are made of two layers. The first is called the substrate, and is nothing more than a metal disc, made ​​of aluminum alloy. More recently, some manufacturers began to use glass, which offers some advantages such as higher hardness, although it is also more difficult to work with. The first hard drives with glass discs were the IBM Deskstar 75GXP, launched in 2001.

Regardless of the material used, the disk needs to be completely flat. As the discs rotate at high speeds and the read heads work extremely close to the magnetic surface, any change would be fatal. To achieve perfection required, the disc is polished in a clean room, until it becomes perfectly flat. Then comes the final part, which is the placement of the magnetic surface on both sides of the disc.

What is electronic component?
The electronic components are the structure of an electronic circuit, ie, are the components that are part of any electrical or electronic circuit (from the simplest to the most complex), which are interconnected. Can also be defined as the entire electronic component device that transmits electric power via a conductor or semiconductor or.

The electrostatic studying?
Electrostatic is the part of physics that studies the behavior of electric charges itself and the processes by which the same is eltrizam. Electricity as a science dates from 600 BC, when the Greeks observed that a stone of amber, when rubbed with wool, acquired the ability to attract small objects for you.


What is it and what makes an SDM component?
SMD means dispositvos surface mounted. It is a new technology that aims to reduce the space occupied by the traditional components (resistors, diodes, transistors and ICs) on certain boards, such as computers and other devices that need to be complex, but take up minimal space.

What are the means that cause ESD?
Basically the most common way to ESD is the cause mishandling of components. One should not dismiss an ESD generated in the manufacture of the component, but it is evident that many users, technicians and salespeople do not manipulate the components correctly, thanks to this, generating the ESDs.
The big problem is that, as I mentioned in the title, it is invisible and insensible to humans. This makes think people do not believe much in damages that a mishandling may cause. If all the pieces correctly to manipulate sure the index returned parts and problems to solve would be reduced drastically.

What is printed circuit?
The printed circuit boards were created to replace the old bridges were fixed terminals where the electronic components in assembly known in the jargon as electronic assembly "spider" because the final look that took the circuit, especially where electronic valves and their multiple pins there socket mounting brackets.
The printed circuit board consists of a phenolite, glass fiber, polyester fiber, polyester film, based on different specific polymers, etc., having the surface covered on one or both sides with thin copper film, silver film, or alloys of gold, nickel and others, in which are conductive tracks that represent the circuit which will be fixed electronic components drawn.

What is HD?
The HD is the memory of the computer itself, the configuration of a computer is the greatest number, for example, if the computer has memory 2 GB / 320 GB, it has the RAM memory, volatile memory that goes off at shutdown, 2 GB and 320 GB HD, memory that stores files and programs and does not go off when the computer is turned off.

The PCB is?
The PCB is the basic component of the motherboard is the PCB, the printed circuit board where the other components are soldered. Although only two faces are visible, the PCB of the motherboard comprises a total from 4 to 10 plates (total of 8 to 20 sided!). Each plate has a portion of the tracks needed, and they are joined by soldering points strategically positioned. That is, although united after they appear to be a single board, we actually have a sandwich of several boards.