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A storage device that uses lasers to read data on the optical data

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Optical storage devices save data as patterns of dots that can be read using light. A laser beam is the usual light source. The data on the storage medium is read by bouncing the laser beam off the surface of the medium. This process is known as 'burning' data onto a disc A floppy drive, or floppy disk drive, is a storage device that uses removable 3.5-inch floppy disks. These magnetic floppy disks can store 720 KB or 1.44 MB of data. In a computer, the floppy drive is usually configured as the A: drive . Explanation: please follow me and make me as brainlist A storage device that uses lasers to read data on the optical media is the Optical Storage. An Optical Storage is an electronic storage medium that uses low-power beams to record and retrieve digital data. It is a storage type in which data is written and read with Optical Drive - is another type of storage device that uses lasers to read and write data on the optical media such as: Compact Disc (CD), Digital Versatile Disc (DVD) and Blu-ray Disc (BD). Mouse - a small hand-held device used by clicking to select an item/option or to control the cursor/crosshair at any direction on-screen Optical storage is a method of storing and reading data in a form that can be interpreted with the use of a laser. This technology has been steadily replacing older, inferior forms of information storage and have become a fixture in both workplaces and everyday life

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A _____ storage system uses lasers to read data. optical. The _____ keypad includes keys such as the Home, End, and arrow keys. navigation A USB _____ drive is a portable storage device featuring a built-in connector that plugs directly into a computer's USB port and requires no card reader Optical storage is any storage method that uses a laser to store and retrieve data from optical media Type of storage medium that consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser

In column 2, name the storage device being described. In columns 3, 4, or 5, tick ( ) to show the appropriate category of storage. 1 2 345 Description of storage device Name of storage device Category of storage Primary Secondary Off-line optical media which use one spiral track; red lasers are used to read and write data on the media surface Optical Storage Device - uses lasers and lights as its mode of saving and retrieving data. Blu-ray disc - A digital optical storage device which was intended to replace the DVD format. CD-ROM disc - An optical storage device that is read-only or cannot be modified nor deleted e 5D optical data storage (sometimes known as Superman memory crystal) is a nanostructured glass for permanently recording digital data using femtosecond laser writing process. The memory crystal is capable of storing up to 360 terabytes worth of data for billions of years. The concept was experimentally demonstrated in 2013 Modern life revolves around data, which means that we need new, fast, and energy-efficient methods to read and write data on our storage devices. Optical-based approaches, which use laser pulses. A decade ago, studies first demonstrated that laser pulses could control electron spins to write data and could monitor the spins to read stored data. Doing this involved measuring tiny..

Optical Storage Optical storage technology use laser/optical reflection phenomenon to read or write data Optical storage devices save data as patterns of dots that can be read using light. A laser beam is the usual light source. The data on the storage medium is read by bouncing the laser beam off the surface of the medium. If the beam hits a dot it is reflected back differently to how it would be if there were no dot In optical-storage technology, a laser beam encodes digital data onto an optical, or laser, disk in the form of tiny pits arranged in a spiral track on the disk's surface. A low-power laser scanner is used to read these pits, with variations in the intensity of reflected light from the pits being converted into electric signals Such devices used lasers and lights to detect and store data. They are cheaper in comparison to USB drives and can store more data. Discussed below are a few commonly used optical storage devices. CD-ROM - This stands for Compact Disc - Read-Only Memory and is an external device which can store and read data in the form of audio or software.

An optical device writes data to them by shining a laser onto the disc. The laser burns pits to represent '0's. The media can only be written to once, but read many times Engr: Sajida Introduction to computing Optical storage The storage devices which use laser to read data from or write data to the reflective surface store data optically using laser beam Laser can write and read data at densities much higher than magnetic technology, so the storage capacity of optical disk is much higher than magnetic disk of same physical siz Optical data storage refers to any method of storing data using light.The most common method is optical disk, which offers a data density considerably higher than magnetic methods. There are three types of optical disks: ROM, or read only memory; WORM, or write once, read many times; and MO, or magneto optical disk, a disk which, like magnetic computer disks, can be repeatedly written on and. Description of storage device Name of storage device Category of storage Primary Secondary Off-line optical media which uses one spiral track; red lasers are used to read and write data on the media surface; makes use of dual-layering technology to increase the storage capacity DVD non-volatile memory chip; contents o

Optical media refers to any data storage device or equipment that uses optical data storage and retrieval techniques to read and write data. It stores data digitally on a media device and uses a laser to read data from it. Optical media is also known as optical storage The data is read while bouncing laser beam on the surface of storage medium. Laser beam creates the all Dots while reading process, but it is used with high power mode to mark the surface of storage medium, and make a dot. This entire process is also called the Burning data onto Disc. Types of Optical Storage Devices An optical disk is any computer disk that uses optical storage techniques and technology to read and write data. It is a computer storage disk that stores data digitally and uses laser beams (transmitted from a laser head mounted on an optical disk drive) to read and write data. Advertisement A Optical disk is a kind of storage device that stores data permanent. For storing data optical disk uses LASER technology. A dark pit is burnt on the surface of the disk using laser beams. Similarly LASER technology is used to read the data as well

CDs and DVDs are optical storage devices ; Red laser light is used to read/ data in the surface of the disc (the wavelength of the red light is 650 nanometers - longer to read the data so it is slower to load) Data is stored in pits and bumps in a spiral track; DVD uses dual-layering which increases the storage capacity For each we will discuss features, uses, advantages/disadvantages. All the mediums that use a light source to read/write data onto a disc. Optical storage media stores data on a disc as a number of data dots that can be read using light (usually a laser beam). Each dot represents 1's and 0's (Bits of information)

  1. CDs, DVDs, and Blu-Ray disks are all optical storage; they use a laser to read the data (as opposed to hard drives, that use a magnet). There used to be a hybrid storage called Magneto-Optical
  2. optical storage writes and retrieves data using a laser or similar. Magnetic storage uses a coating on a disc or tape to hold data, by manuplating the tiny ferrous elements on the surface it can.
  3. For each we will discuss features, uses, advantages/disadvantages. All the mediums that use a light source to read/write data onto a disc. Optical storage media stores data on a disc as a number of data dots that can be read using light (usually a laser beam). Each dot represents 1's and 0's (Bits of information)
  4. An optical device writes data to them by shining a laser onto the disc. The laser burns pits to represent '0's. The media can be written to only once, but can be read many times
  5. Optical storage devices read data using a laser. The disks used for storage (like CDs, DVDs and Blu-rays) were more expensive than floppies but held a lot of data
  6. Glass storage has the potential to become a lower-cost option because you only write the data onto the glass once. Femtosecond lasers — ones that emit ultrashort optical pulses and that are commonly used in LASIK surgery — permanently change the structure of the glass, so the data can be preserved for centuries

What storage device uses a laser to read and write data

7. Compact Disks. Compact disks are known as optical storage devices. Data is burned onto the surface of the disk using a laser beam in the CD drive. A laser beam is also used to read the data stored on the disk. A CD can store around 650 Mb of data. A typical MP3 song is about 3Mb and so a CD can hold about 200 songs In optical-storage technology, a laser beam encodes digital data onto an optical, or laser, disk in the form of tiny pits arranged in concentric tracks on the disk's surface. A low-power laser scanner is used to read these pits, with variations in the intensity of reflected light from the pits being converted into electric signals A better solution for portable devices and storage might not be available. Typical Storage Capacity: 2 GB to 32 GB and Beyond. Optical Storage Types 7. CD. Compact Disks (CDs) are known as optical storage devices. The disks feature microscopic pits and bumps that disk drives read as binary data

A storage device that uses lasers to read data on the

The amount of data in the world is expanding exponentially. About 90% of the world's data has been created in the last two years, and almost 5% percent of the world's power is used for data storage and computing. Lyteloop has an approach to data storage that uses optical communications to store data in motion between objects d. storage devices e. solid stage storage d. storage devices 4 A laser is used to read data. d. It is not very durable. e. Hard disks are an example. c. A laser is used to read data. 6 Optical storage stores data in ____. Select one: a. solid state b. pits and land

UNIT 3.2 Output devices. An output device is any device that takes data stored on a computer and makes it available to the user in an easy to understand way. This data may be made available using pictures (such as on a monitor or printed to a page) or using sounds (such as with speakers and earphones) An optical disk drive uses a laser to read and write data. A laser in this context means an electromagnetic wave with a very specific wavelength within or near the visible light spectrum 3D optical data storage is any form of optical data storage in which information can be recorded or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).. This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120 mm). Data recording and readback are achieved by focusing lasers within the medium To store data, files and software for future use ü To storage programs that are currently running To store data that the processor needs Question 11: Which type of storage uses lasers to write the data? (4/5) ü Optical ü Magnetic Solid state All types Question 12: The types of storage are listed below from fastest to slowest. Which order is. Holographic storage was first proposed back in the 1960's shortly after the invention of the laser. Holographic optical storage systems store data by recording the interference between the wave-fronts of a modulated optical field, containing the data, and a reference optical field, as a refractive index variation inside the storage media

Uses lasers to read data - Brainly

What storage device type matches the following description? Uses lasers to read and write information stored in the form of pits in their reflective coating - Hard disk drive (HDD) - Solid state drive (SSD) - Optical dis Access Optical Networks (AON; Monmouth Junction, NJ) has developed several technologies for holographic data storage (HDS) with write-only, read-only, and rewrite capability in a volumetric crystal media. The new nonvolatile-memory HDS products are designed to have a storage density of 1.2 terabytes (Tbytes), with read/rewrite performance of 1 Gbit/s

SG8 - Optical Drive \u2013 is another type of storage

Optical storage arrays: a perspective for EB data centers. The question of how to store the vast amount of data generated each year completely and efficiently is an urgent challenge confronting. Storage Devices Secondary Storage Hard Disk • The hard disk drive is the main, and usually largest, data storage device in a computer. • It can store anywhere from 160 gigabytes to 2 terabytes. • Hard disk speed is the speed at which content can be read and written on a hard disk. • A hard disk unit comes with a set rotation spee

Storage media is the term given to the devices that are used to hold data. Note: Storage media is NOT the same thing as a storage device. Storage media = the part that holds the data. Storage device = the machine that reads/writes data to and from the media. Examples: The CD is the 'media' (where data is held A magnetic reader arm is used to read data from and write data to the disks. A typical modern HDD has capacity in terabytes (TB). CD Drive. CD stands for Compact Disk. CDs are circular disks that use optical rays, usually lasers, to read and write data. They are very cheap as you can get 700 MB of storage space for less than a dollar Using Laser Light to Read and Write Magnetic Data. A look inside the RCI sample chamber while researchers close up the chamber for vacuum for an experiment at LCLS. (Credit: Diling Zhu/SLAC) In an effort to keep pace with the demand for faster computing devices, scientists at the SLAC National Accelerator Laboratory are exploring the use of. Optical storage media In optical storage media information is stored and read using a laser beam. The data is stored as a spiral pattern of pits and ridges denoting binary 0 and binary 1. Examples: CDs and DVDs. Compact Disk: A Compact Disc drive(CDD) is a device that a computer uses to read data that is encoded digitally on a compact disc(CD. • CD-ROMs store data using microscopic pits burned into a glass master CD-ROM with a powerful laser • CD-ROMs store data on only one side of the disc, near the top of the CD-ROM, where the label is located - Scratches on the label side are more serious • CD-ROM drives use a laser and mirrors to read data

How Does Optical Storage Work - The New Way to Find Lasers

What Are Examples of Optical Storage Devices? Optical storage devices are any storage methods that use a laser to store and retrieve data from optical media. Optical storage media includes CD-ROM, DVD-ROM, DVD-RAM, WORM cartridges, erasable optical cartridges and removable mass storage media, which includes flash drives and removable disk, or RDX OPTICAL DISC Optical disc is a form of removable storage. It includes CDs , DVDs and blue ray discs, Optical drives use a laser to read and write data on optical disc. The laser stands for Light Amplification through Stimulated Emission of Radiation. Laser beam writes on the surface by creating small pit (hole) in the disc The spiral data tracks on a Blu-Ray disc are so small a special blue (violet) laser has to be used to read the 'bumps'. Like a DVD, Blu-Ray discs are capable of storing data on multiple layers. Recordable Optical Media CD-ROM, DVD-ROM, Blu-Ray-ROM. Read only - the data is permanently written to the disc at the point of manufacture Read the article Data storage: Everything you need to know about emerging technologies (Links to an external site.) on the ZDNet web site and research to learn about the technology of data storage devices. In general, there are three primary types of data storage devices in use today: magnetic storage, optical storage, and solid state storage

Holographic optical storage nears commercialization

Project Silica is developing the first-ever storage technology designed and built from the media up, for the cloud. We are leveraging recent discoveries in ultrafast laser optics to store data in quartz glass by using femtosecond lasers, and building a completely new storage system designed from scratch around this technology (a) Question 9 (a) tests your knowledge of optical media by asking how data is read from a Compact Disk (CD) 4 marks are available here. Each of the following points are worth one mark. Answers (red) laser is used; laser beams) shines onto the surface of the disk) It is rotated at a constant speed to be read Alternatively referred to as a disc drive, optical media, optical storage, Optical disc drive, and optical disk, an optical disc is any media read using a laser assembly. The most common types of optical media are Blu-ray, CDs, and DVDs.Computers can read and write to CDs and DVDs using a CD writer or DVD writer drive, and a Blu-ray is read with a Blu-ray drive

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Why 'Optical'? Optical storage devices save data as patterns of dots that can be read using light. A laser beam is the usual light source. The data on the storage medium is read by bouncing the laser beam off the surface of the medium. If the beam hits a dot it is reflected back differently to how it would be if there were no dot. This. Optical storage devices: Another common storage was optical storage, which uses lasers and lights as its method of reading and writing data. it was most common but it has been replaced by Flash Memory. flash memory is very fast in speed, reliable and cheaper. Blu-ray disc; CD-ROM disc; CD-R and CD-RW disc. DVD-R, DVD+R, DVD-RW, and DVD+RW disc.

12.4. Rewritable Optical Storage With the development of the erasable/rewritable optical disk, the most obvious limitation of optical storage systems is removed. Optical disks can now functionally replace other recording storage media. In applications where large amounts of data have to be stored, but read/writ Optical disk An optical disk is any computer disk that uses optical storage techniques and technology to read and write data. It is a storage device in which optical (light) energy is used. It is a computer storage disk that stores data digitally and uses laser beams to read and write data

Computer system, devices and peripherals

When used with a server, holographic storage devices will invariably require device drivers that correspond to the operating system in use. Optical storage technologies use lasers for noncontact. The scientists used a femtosecond laser, which emits pulses of light in femtoseconds (one quadrillionth, or one millionth of one billionth of a second). The 5D read/write laser can record up to an estimated 360 TB/disc data capacity on nano-structured glass capable of thermal stability up to 1000°C — and a practically unlimited lifetime

Doesn't use a laser to read/write data. Magnetic storage devices are; Hard disk , Floppy disk, Magnetic tape etc. Optical storage: Stores data optically, uses laser to read/write. Not affected by magnetic fields. Has less storage than a hard disk. Data accessing is high, compared to a floppy disc. Optical storage devices are; CD-ROM,CD-R, CD-RW. How magnetic fields are used to store data. All magnetic storage devices read and write data by using electromagnetism. This basic principle of physics states that as an electric current flows through a conductor (wire), a magnetic field is generated around the conductor. Note that electrons actually flow from negative to positive as shown in.

Optical storage - IB

  1. Optical Disk. Optical Disk is again a storage device and use optical storage technology for data processing like read/write/access operations. An optical disk stores data using laser light and is read using the same. Laser light reads data on a spinning disk. Following are the important difference between Magnetic Disk and Optical Disk
  2. Eternal 5D data storage . Scientists at the University of Southampton have made a major step forward in the development of digital data storage that is capable of surviving for billions of years.. Using nanostructured glass, scientists from the University's Optoelectronics Research Centre (ORC) have developed the recording and retrieval processes of five dimensional (5D) digital data by.
  3. A Blu-ray disk is an optical storage device similar to CD and DVD technology. It also uses a laser to read and write to the disk, but instead of a red laser beam, as used in DVD and CD, it uses a blue-violet laser beam. This means it can burn smaller pits on the disk and so it has even more storage capacity than a DVD
  4. Other articles where Optical disc is discussed: information processing: Recording media: recording and storage medium, the optical disc, became available during the early 1980s. The optical disc makes use of laser technology: digital data are recorded by burning a series of microscopic holes, or pits, with a laser beam into thin metallic film on the surface of a 434-inch (12-centimetre.

If you use write-once optical discs, then that data is locked down for good -- it can't be edited, accidentally or maliciously, and if kept in a cool, dark location, the storage will remain usable. Hitachi is working on its own form of glass-based data storage, and in 2014, researchers simulated a liquid hard drive that would use nanoparticles suspended in a solution to store data. At. 1. Compact Disk - Read Only Memory (CD-ROM) CD-ROM drives use a combination of lasers and sensors to read the data stored on the surface of the disks. CD-ROMs are read-only devices. They can hold in the region of 700 megabytes of data. Like hard disk drives, CD drives use direct/random access to read data. Movie: 17

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5.1 flashcards Flashcards Quizle

  1. Storage device that uses laser technology to read data that is permanently stored on compact disks, cannot be used to write data to a disk. Program: Set of detailed, step-by-step instructions that tell a computer how to solve a problem or carry out a task. Application Software: Set of computer programs that help a person carry out a task. Multi.
  2. Digital-Imaging and Optical Digital Data Disk Storage Systems: Long-Term Access Strategies for Federal Agencies July 1994 A Report by: The Technology Research Staff The National Archives at College Park 8601 Adelphi Road College Park, Maryland 20740-6001 July 14, 1994 In recent years, Federal agencies have become increasingly interested in using digital information technologies to store large.
  3. Optics for the Cloud is a programme of research to advance and enable the adoption of optical technologies in the rapidly growing field of cloud computing. The scope of this opportunity includes storage, network, compute, memory and specialized accelerators. The research also spans the entire vertical stack, ranging from optical device fabrication, to optical system and sub-system design, to.
  4. CD-ROM is short for Compact Disc-Read Only Memory, which is a type of optical disk capable of storing large amounts of data - up to 680MB per disc. A single CD-ROM has the storage capacity of 470 floppy disks, enough memory to store about 340,000 pages of text
  5. Optical storage media that allows very high storage capacity by using blue/violet laser technology. Volatile memory that stores data, programs and the parts of the operating system that are currently in use. Optical storage media that uses a single spiral track and uses dual layer technology, allowing high data storage capacity. Device that.
  6. Optical data storage is a method of storing digital information (1's and 0's) by using light to read the information. Analog information is converted into digital information, which is then.

The 5D optical storage medium works by using an extremely fast and precise femtosecond laser to create tiny pits within the fused silica glass containing self-assembled nanostructures (nanogratings). Quartz silica glass is the same material used to make spacecraft windows and is extremely durable in space By using five-dimensional shapes that are laser-etched into glass discs at a microscopic scale, the University of Southampton has developed the highest storage efficiency in a data storage device to date. The discs also have the longest life-span of any data storage device to date

Storage Devices What, Types & What Is It Used For

But if you want to write a new data, then the existing data is erased from the disk and new data is recorded. Optical Disk : Information is written to or read from an optical disk or tape using laser beam. Optical disks are not suitable memory storage units because their access time is more than that of hard disks Magnetic storage media and devices store data in the form of tiny magnetised dots.These dots are created, read and erased using magnetic fields created by very tiny electromagnets. In the case of magnetic tape the dots are arranged along the length of a long plastic strip which has been coated with a magnetisable layer (audio and video tapes use a similar technology) An input device is used to enter data or information into the computer for processing. E.g. a mouse. The input device that is used to read characters from a printed paper into the computer is called an Optical Character. Reader (OCR)-The OCR reads the characters with the help of a light source and photoelectric cells 12.4. Rewritable Optical Storage With the development of the erasable/rewritable optical disk, the most obvious limitation of optical storage systems is removed. Optical disks can now functionally replace other recording storage media. In applications where large amounts of data have to be stored, but read/writ When the optical signal enters at the transmitter end of fiber then optical communication system transmits to the end of the receiver using the optical fiber. Receiver. In the FOC system, a photodetector can be used as a receiver. The main function of the receiver is to change an optical data signal back to an electrical signal

Optical Libraries and Jukeboxes. The first optical libraries used large WORM (Write Once Read Many) discs. These 12-inch discs didn't hold too much data (about 650K Bytes), but they were the first disc to be called archival since the data was predicted to be available for over 50 years The Hi Def standard is this. The name comes from the blue-colored laser that is used to read the disc. Solid-State Storage. These have no moving parts. Data an info are stored and retrieved electronically directly from these devices much as they would be from conventional computer memory Compact disc CD is a digital storage format for optical media jointly developed by Philips and Sony. The CD format was originally developed for storing and playing sound recordings but was later adapted for storing data. Data on a CD is encoded with the help of a laser beam that etches tiny indentations (or bumps, if you will) on its surface Data Storage Device. A data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs Storage devices focused on holding computer data, e.g., HDDs, FDDs, Iomega zip drives, use concentric tracks to store data. During a sequential read or write operation, after the drive accesses all the sectors in a track it repositions the head(s) to the next track. This will cause a momentary delay in the flow of data between the device and.

According to IDC's Data Age 2025 study in 2017, the recent explosion of Big Data and global cloud storage generates 2.5 PB (10 15 bytes) a day, stored in massive, power-hungry data centers that use 3 percent of the world's electricity supply. The data centers rely on hard disks, which have limited capacity (2TB per disk) and last only two years. IDC forecasts that by 2025, the global. Optical Disc Structure. An optical disc is a flat, usually circular disc which encode binary data in the form of pits and lands on a special material on one of its flat surfaces. The lands represent 1 and the pits represent 0 in binary computing. The bits are read by the disc drive that uses a laser beam to distinguish between the lands and pits based on the amount of scattering or.

It can read data from the storage medium but you can NOT change the data or save any new data on it. A CD-ROM is an example of this. Many music CD's that you buy are this way. A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data Optical discs are separate from devices and do not have any tiny spinning parts, which have the risk of breaking down or rusting. For Which Type of Data? You may use blu-ray discs for any kind of data but from the viewpoint of professional data archiving they are the best for such storage that will not change and does not need accessing very often Digital storage is incredibly easy and practical, but it has the downside of being prone to data loss. A book stored on your hard drive might last less than a hardcover. After four years, 11% of.

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M-Disc also uses a non-volatile data layer, but an even better, rock-like one which is said to last ten times longer than BD-R HTL. If you can't trust media that's rated for 1,000 years, you. Bits are stored by a finely focused laser beam burning microscopic dots on the surface. These are then read by scanning with a laser of much lower intensity. Addressing particular items of data can be accomplished using a microcomputer. The major restriction with the early optical disk systems is that they are read-only devices; that is, once. Storage: Optical Discs. A n entirely different method of recording data is used for optical discs. These include the various kinds of CD, DVD, Blu-ray, and M discs. To read the data on a disc, laser light shines through the polycarbonate and hits the data layer. How the laser light is reflected or absorbed is read as a 1 or a 0 by the computer DVDs have a storage capacity of 4.7GB and can be used to store data for various uses. For you to write content/data to a disc, you will need a blank recordable DVD disc. DVD optical drives write data to CDs by heating the organic dye layer parts of the discs; they use a laser that changes the reflectivity of the dye Semiconductor data storage such as flash drives and solid-state drives provide a lifespan around ten years. For magnetization-based memory, such as HDD, needs to transfer data every couple of years in order to prevent data loss, while the data stored in conventional optical discs such as CD, DVD, HD DVD and Blu-ray only last tens of years

The Magnetic disk and Optical disk are the storage devices provides a way to store data for a long duration. These disks differ in many characteristics; firstly magnetic disk works by using magnetising material over the disk whereas in optical disk polycarbonate plastic is used in its construction and laser is used to store and retrieve the data The data are then read by shining light, at a variety of polarisations, through the glass. Machine learning algorithms can make this process much faster than spooling through tape storage to. Laser light reflected from the different polarizations varies, per the Kerr effect, and provides an on/off, bit of data storage system. When the disc is prepped for writing, each section of the disc is heated, using a strong laser, and is then cooled while under the influence of a magnetic field Optical media: CDs and DVDs are the most well-known members in the class of optical storage. These mediums are the more efficient successors of the 3.5-inch disk drives. You had to use these in spades to store any substantial amount of data. Optical media have exceptionable read speeds, capacity, and portability This is the medium used to store the program instructions as well as the data required for future processing. Most secondary storage devices in use today are based on magnetic or optical technologies. Disk drives. The disk drive is the most popular secondary storage device, and is found in both mainframe and microcomputer environments

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