Hard disk components and their functions pdf

Hard disk drive components basic components of a typical hard disk drives are. Hard disk performance the following factors affect the performance of the hard disk. Video cards have their own dedicated ram for performing these functions. Hard disk drives have been the dominant type of storage since the. Computer hardware is the physical component attached to your pc. What are the different internal parts of a cpu and their.

Jun 30, 2009 what are parts of hard disk and their function. Here you can find the latest products in different kinds of parts of hard disk and their functions. This mobo hardware act as the main board or the central or core assembly of the computer system unit. A ppt on harddisk,its components and some issues or problems in harddisk. The files are stored in such a way that they can be acquired at any time.

Jul 14, 2011 visualization made with 3dsmax, photoshop, premiere pro and cryengine. It also contains an access arm and read and write head to read and write data to the disk. Obviously, the readwrite heads dont just float in space. Hard disk, components, characteristics, performance and hard disk controllers. The palm reading free pdf active part of the computer, the part that does calculations and controls all. Computer components central processing unit cpu characteristics. A hard disk drive often shortened as hard disk, hard drive, or hdd is a nonvolatile storage device that stores digitally encoded data on rapidly rotating rigid i. It is used to do low level disk testing and functions that are directly responsible for the proper functions and healthy state of hard disk. The video to the right shows how data is readwritten to the hard disk drive by spinning a platter across a readwrite head.

Mar 16, 2014 parts and functions of the motherboard the computer motherboard or shortly mobo is one of the most important part of the personal computer pc. Each hard disk head is therefore mounted to a special device called a head slider or just sliderfor short. Hard disk plattersdisks have one or more platters or disks 3. These components are fixed in their respective ports and can only be replaced by computer hardware engineertechnician computer hardware is entrenched inside a steel covering, therefore, it is not visible to the end users. Types of computer hardware computer hardware components. As the name suggests, the cpu processes all functions within a computer. Visualization made with 3dsmax, photoshop, premiere pro and cryengine. It is a hardware of the computer installed inside the system unitcpu. These platters are usually made of some hard material such as. Recording of single magnetisations of bits on a 200 mb hddplatter recording made visible using. Modern disks normally have their firmware codes located on data platters and also the pcb board.

The primary archival storage memory for the system. Electronic components function depends on type and need of the circuit. Most chips are not much bigger than one half inch square. Central processing unit is the brain of your computer, the more powerful it is, the better the performance and the faster the response times will be. Our hard disk drives and solid state drives come in a wide variety of capacities to hold all of your games, music, movies, and tv shows without a problem. These devices display information on a screen, create printed copies or generate sound. Software is held either on your computers hard disk, cdrom, dvd or on a diskette floppy disk and is loaded i.

This hard disk drive reference manual is organized in the following method. Index introduction history of windows windows server components of main window mouse function highlight, cutcopypaste toolbars drag and drop file extension multitasking virtual keyboard disk drive defragmenting hard drive. It only takes a small amount of dust on the surface of the platters to destroy all of the data on the hard disk. The hard drive, the tape drive, the floppy disk, and the cdrom drive are storage devices. Computer hardware is organized according to these basic functions. The microprocessor controls the following functions for the drive electronics. To compensate, tracks could be written fairly wide so that the head would find them even if it was a bit misaligned. In this post i have updated some important questions with their answer as a mcq format or quiz format for your upcoming competitive examinations. The hard disk and the hard disk drive exist together as a unit and is a permanent part of the computer where data and programs are saved. It is used to move the cursor usually arrow icon on the screen and to perform click actions. Maxtor hard drives contain all necessary mechanical and electronic parts to interpret. Hard disk, components, characteristics, performance and. System components pc components, features, and system. Anatomy of a hard disk drive logic board of 6 hardware.

The 5 major components in a computer hardware diagram are described as following. Because multi core processors are now the norm it is bec. Compact disk compact disk cd is portable disk having data storage capacity between 650700 mb. Ppt on harddisk and its components hard disk drive. This article describes list of laptop parts and functions of these laptop parts. Hard disk the hard disk drive is the main, and usually largest, data storage device in a computer. Hard disk, components, characteristics, performance and hard. Other components of a computer 18 hard disk drive hdd larger and slower then ram i a hard disk drive is an electromechanical storage device that is. A highend video card is required to process extremely intense visual functions, such as computer drafting by engineers.

It is placed in side the cabinet of cpu although external hard drives are also available these days. Hard disk drives are also covered in detail in chapter 10. Here is a list of possible hard disk problems and their solutions that every computer user should know. Hard disk drives the last chapter introduced the general concept of an io device and showed you how the os might interact with such a beast. Motherboard the circuit board onto which all components are fixed 2. The hard disk or hard drive stores your computers operating system, the programs that are installed on your computer, and most of your files. The software is the instructions that makes the computer work. Hard disk, components, characteristics, performance and hard disk. As you can see, the drives have quite different characteristics, and in many ways nicely summarize two important components of the disk drive market. Data can include the computers operating system and applications as well as personal files including photographs, documents and music. Hard disk drives the last chapter introduced the general concept of an io device and. Diagram labeling the major components of a computer hdd. Integrated circuit contains many microscopic pathways capable of carrying electrical current.

An hdd with disks and motor hub removed, exposing coppercolored stator coils surrounding a bearing in the center. What are parts of hard disk and their function answers. Hard disk drive components disk platter readwrite head head armhead slider head actuator mechanism. These electronic components are basic electronic parts packaged in a discrete form with two or. Other components of a computer 18 hard disk drive hdd larger and slower then ram i a hard disk drive is an electromechanical storage device that is nonvolatile, which means that the information is retained even when power is shut o i volatile memory. The system unit system unit is case that has electronic components of the computer used to process data. We start with a platter, a circular hard surface on which data is stored persistently by inducing magnetic changes to it. Parts of cpu and their functions hard disk this is the part in which all the programs and data of the computer are safe. On larger hard drives, several platters are used to increase the overall capacity of the drive. Motherboard it is the body or mainframe of the computer, through which all other components interface. Lets start to understand some of the components of a modern disk. It is the time required by reading and writes head to the correct location on the disk. These practice sets will be very useful for ssc, cgl, chsl, mts, ias, upsc or other. Pdf hard disk drive and disk encryption researchgate.

It will process all the data and perform calculations. Hard disk drive hdd, cddvd rom, usb card reader, fdd. Direct memory access or dma is the generic term used to refer to a transfer protocol where a peripheral device transfers information directly to or from memory, without the system processor being required to perform the transaction. Strictly speaking, drive refers to the motorized mechanical aspect that is distinct from its medium, such as a tape drive and its tape, or a floppy disk drive and its floppy disk. The shortcomings of stepper motors were unfortunate but acceptable with old hard disks, because of their relatively low track density. Using type of communication media such as the network switch and router.

The hard disk platters are accessed for read and write operations using thereadwrite heads mounted on the top and bottom surfaces of each platter. Hard disk speed is the speed at which content can be read and written on a hard disk. Some of these are the hard drive, motherboard and the processor chip cpu. Different components of hard disk drives full video youtube. It is not a removable drive in normal circumstances. The parts of laptop include display screen, keyboard, base panel, top panel, cooling fan, ram, hard disk, palm rest assembly, battery, hinges, speaker, optical drive, antenna etc. We provide 20 for you about parts of hard disk and their functions page 1. It is where we saved our files and data including our. The function of the slider is to physically support the head and hold it in the correct position relative to the platter as the head floats over its surface. A hard disk can be either internal or external and one can use it to save files. See these hardware installation videos for walkthroughs on installing different computer hardware, like a hard drive, power supply, motherboard, pci card. Ppt on harddisk and its components free download as powerpoint presentation. Mar 31, 2020 computer hardware components individually heat up and cool down as theyre used and then not used, meaning that eventually, every single one will fail. Computer hardware components individually heat up and cool down as theyre used and then not used.

The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Mouse the mouse is a pointing device that sends control signals into the computer. A hard disk drive hdd, hard disk, hard drive, or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital data using one or more rigid rapidly rotating platters coated with magnetic material. Its the first component installed in the system unit, and it holds all of the circuitry that ties the functions of the computer components together. It will have control over the functions of the various components. The pace of development of the magnetic disk drive since its conception in the early 1950s has been such that it is now a standard component in all except the. Types of computer systems computers are often identified by their size and power. Its a very brief view of some of the components of the hard disk. What are the main parts of a computer and their functions.

It can store anywhere from 160 gigabytes to 2 terabytes. Modern ideata hard disks use firstparty dma transfers. A hard disk drive hdd is a nonvolatile computer storage device containing magnetic disks or platters rotating at high speeds. I would recommend choosing the wellventilated casing. As well as the casing on the outside of the hard disk that holds all of the components together, the frontend circuit board controls input and output signals in tandem with the. A hard disk unit comes with a set rotation speed varying from 4500 to 7200 rpm. A motherboard or also know as system board, is the main circuit board of the system. I work for an it magazine company called all systems go. By continuing to use this website, you agree to their use. These drives have been the main form of persistent data storage in.

My company has been approached by the producers of the tv programme the gadget show to write a blog or website to help their viewers understand the different elements of a computer system. File the generic word for an application, document, control panel, or other computer data. It is a secondary storage device used to store data permanently, random access memory ram being the primary memory device. Data is stored on the the platters in tracks, sectors and cylinders to. Strictly speaking, drive refers to the motorized mechanical aspect that is distinct from its medium, such as a tape drive and its. Hard disk drive 7 cdrom compact disk read only memory it is a storage device with very large capacity, which ranges from 1gb to terabytes in the modernscenario. A typical personal computer consists of a case or chassis in a tower shape desktop and the following parts. Caribbean secondary education certificate information. In this chapter, we dive into more detail about one device in particular. Processor the chip that does all the processing, maniulating,converting and dealing with data that you enter. Computers are often identified by their size and power. It should first be mentioned that the internal components of a hard disk are very sensitive to dust, debris and fingerprints. I discrete gpu units include their own ram called vram for.

Thus, it is worth understanding the details of a disks operation before building. In other words inside of the cpu case there are a lot of other hardwares connected to the mobo, namely. Internal components of a hard disk rewave data recovery. Like many components, many types of video cards are available with varying power and prices. The system unit a chip is a small piece of semiconducting material, usually silicon, on which integrated circuits are etched.

Monitor, printers, and speakers are output devices. In this tutorial we will show you the main hard drive components, both internal and external. Apr 25, 2017 these videos are useful for examinations like nta ugc net computer science and applications, gate computer science, isro, drdo, placements, etc. Common categories of computer systems include supercomputers, mainframes, and microcomputers. Strictly speaking, drive refers to the motorized mechanical aspect that is distinct from its medium.

Hard disk is one of the core components of any computers and it can contain huge amount of data. These videos are useful for examinations like nta ugc net computer science and applications, gate computer science, isro, drdo, placements, etc. Output devices an output device lets a computer communicate with you. The hard disk drive is the main, and usually largest, data storage device in. A hard disk drive, also known as a hard drive or hdd, is used to store data long term. Looking for parts of hard disk and their functions. For better airflow because we all know that once our computer is on, it will generate a lot of heat. Provides one of the core functions of the modern computer. Each of these components and their function in the hierarchy is described. The system unit focuses on processing, whereas a variety of peripheral devices facilitate input, output, storage, and communication. Automatic input devices can input information on their own. Everything you need to know about computer hardware. These disks have storage capacities ranging from 1gb to 80 gb and more.