Secondary Storage
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Floppy disks, tapes, zip disks, and hard disks are examples of different storage media that vary in size, storage capacity, accessibility, and portability. Floppy disks have low storage capacity and portability while hard disks have high storage capacity but low portability. Storage media can be optical like CDs, DVDs, or magnetic like floppy disks, hard drives, zip disks, and tapes. Magnetic media uses magnetism to store data and can be accessed directly or sequentially, while optical media uses lasers to read binary data encoded as pits on the storage surface. Flash memory is a type of solid-state circuit media that can be electrically erased and rewritten in blocks.
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Secondary storage devices
Secondary storage devices hold information regardless of whether the computer has power. Examples include floppy disks and hard drives. Secondary storage is slower than primary storage but is used for storing programs and data due to its larger size and lower cost. Magnetic tapes and disks are common sequential and direct access storage devices that differ in their access methods and performance characteristics. Tapes are portable but slow to access random data while disks allow faster random access but have lower capacity than tapes.
Secondary Storage
Secondary storage, such as hard disks, floppy disks, optical disks, magnetic tapes, and online storage, provides large storage capacities and reliability compared to primary storage/memory. It allows permanent storage of software, data, and files. Benefits include vast storage capacities, reliability since data is safe from tampering, convenience of quick data access, and lower costs than paper filing systems. Data is organized on disks through methods like sectors and cylinders to efficiently store information.
multimedia storage and playback or retrival methods or techniques copy
This document discusses different techniques for data storage, retrieval, and playback of multimedia files. It describes various storage media like optical disks and hard drives that can be used to store multimedia. Retrieval of multimedia depends on whether the file is continuous or discrete media. There are different access techniques for retrieving data like sequential, direct, and index sequential access. Magnetic storage uses magnetization patterns to store data on mediums like hard disks or floppy disks. Optical disks like CDs and DVDs also store data that can be read with lasers. Disk spanning allows data to exceed storage capacities by spreading across multiple disks.
Secondary storage devices and
The document discusses several secondary storage devices and media, including magnetic tape, floppy disks, hard disks, optical disks, compact disks (CDs), digital versatile/video disks (DVDs), and magneto-optical disks. Magnetic tape is used for storing large amounts of data across its width in frames and blocks. Floppy disks are removable disks that store data sequentially. Hard disks use read/write heads to access data at different locations on the rigid magnetic disk. Optical disks like CDs and DVDs use laser beams to read data encoded as reflective areas under the plastic layer.
Secondary Storage
Secondary storage is used to store programs and data for future use externally in a non-volatile way. There are three main types: magnetic storage like hard disks and tapes, optical storage like CDs and DVDs, and flash memory like memory cards and USB drives. Magnetic storage uses magnetic particles on disks, optical storage uses lasers to read discs, and flash memory has no moving parts and is used in portable devices.
Secondary Storage Devices
Secondary storage devices such as hard disks, CDs, USB drives, and Blu-ray discs are used for bulk storage of data with large capacities and transfer data to main memory for processing. Hard disks provide fast storage and high capacities, storing data on magnetic disks accessed by read/write heads. CDs and Blu-ray discs use optical technology to store digital data in pits encoded in spiral tracks, with Blu-ray using a blue laser to achieve higher densities. USB drives are portable flash memory devices that can easily transfer data between computers. Secondary storage is cheaper than main memory and has slower access times.
magnetic and optic based storage devices
The document describes different types of storage devices used to store data on computers. It discusses magnetic storage devices like hard drives and floppy disks which use magnets to write binary data to an iron oxide coated disk. Optical storage devices like CDs and DVDs use lasers to read and write data by detecting lands and pits on the disk's surface. The document provides details on how each type of device works, common formats and capacities, as well as newer technologies like recordable CDs and DVDs.
Secondary memory
Its a presentation on the secondary memory of the computer devices where the details of the each memory devices are described.
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Secondary storage devices
Secondary storage devices hold information regardless of whether the computer has power. Examples include floppy disks and hard drives. Secondary storage is slower than primary storage but is used for storing programs and data due to its larger size and lower cost. Magnetic tapes and disks are common sequential and direct access storage devices that differ in their access methods and performance characteristics. Tapes are portable but slow to access random data while disks allow faster random access but have lower capacity than tapes.
Secondary Storage
Secondary storage, such as hard disks, floppy disks, optical disks, magnetic tapes, and online storage, provides large storage capacities and reliability compared to primary storage/memory. It allows permanent storage of software, data, and files. Benefits include vast storage capacities, reliability since data is safe from tampering, convenience of quick data access, and lower costs than paper filing systems. Data is organized on disks through methods like sectors and cylinders to efficiently store information.
multimedia storage and playback or retrival methods or techniques copy
This document discusses different techniques for data storage, retrieval, and playback of multimedia files. It describes various storage media like optical disks and hard drives that can be used to store multimedia. Retrieval of multimedia depends on whether the file is continuous or discrete media. There are different access techniques for retrieving data like sequential, direct, and index sequential access. Magnetic storage uses magnetization patterns to store data on mediums like hard disks or floppy disks. Optical disks like CDs and DVDs also store data that can be read with lasers. Disk spanning allows data to exceed storage capacities by spreading across multiple disks.
Secondary storage devices and
The document discusses several secondary storage devices and media, including magnetic tape, floppy disks, hard disks, optical disks, compact disks (CDs), digital versatile/video disks (DVDs), and magneto-optical disks. Magnetic tape is used for storing large amounts of data across its width in frames and blocks. Floppy disks are removable disks that store data sequentially. Hard disks use read/write heads to access data at different locations on the rigid magnetic disk. Optical disks like CDs and DVDs use laser beams to read data encoded as reflective areas under the plastic layer.
Secondary Storage
Secondary storage is used to store programs and data for future use externally in a non-volatile way. There are three main types: magnetic storage like hard disks and tapes, optical storage like CDs and DVDs, and flash memory like memory cards and USB drives. Magnetic storage uses magnetic particles on disks, optical storage uses lasers to read discs, and flash memory has no moving parts and is used in portable devices.
Secondary Storage Devices
Secondary storage devices such as hard disks, CDs, USB drives, and Blu-ray discs are used for bulk storage of data with large capacities and transfer data to main memory for processing. Hard disks provide fast storage and high capacities, storing data on magnetic disks accessed by read/write heads. CDs and Blu-ray discs use optical technology to store digital data in pits encoded in spiral tracks, with Blu-ray using a blue laser to achieve higher densities. USB drives are portable flash memory devices that can easily transfer data between computers. Secondary storage is cheaper than main memory and has slower access times.
magnetic and optic based storage devices
The document describes different types of storage devices used to store data on computers. It discusses magnetic storage devices like hard drives and floppy disks which use magnets to write binary data to an iron oxide coated disk. Optical storage devices like CDs and DVDs use lasers to read and write data by detecting lands and pits on the disk's surface. The document provides details on how each type of device works, common formats and capacities, as well as newer technologies like recordable CDs and DVDs.
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Secondary storage
This document discusses secondary storage in computers. It begins by explaining the difference between primary storage (RAM) and secondary storage, with secondary storage providing permanent nonvolatile storage. It then describes various types of secondary storage media like hard disks, CDs, DVDs, Blu-ray discs, solid state drives, flash memory, and USB drives. The document also discusses cloud storage, mass storage devices used in organizations like file servers and RAID systems, and careers related to storage like software engineering.
Secondary storage devices
The document discusses different types of secondary storage devices. It describes sequential access devices like magnetic tapes that read and write data sequentially. It also describes direct access devices like hard disks that allow random access to stored data. Hard disks, floppy disks, disk packs, and zip disks are examples of magnetic disks. Optical disks like CDs, DVDs, and Blu-ray disks are also covered. Each type of secondary storage device has advantages and limitations in terms of storage capacity, access speed, portability and reusability.
Chap1 secondary storage
This document discusses different types of secondary storage devices, including magnetic tape, magnetic disks, optical disks, and magneto-optical storage devices. It provides details on the structure, organization, and read/write process of various magnetic storage media like magnetic tapes, floppy disks, hard disks, and zip disks. Magnetic tapes provide inexpensive storage but are sequential access devices. Magnetic disks like hard disks enable direct access and are widely used as primary storage.
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Storage devices
This document defines and classifies different types of storage devices:
- Storage devices are hardware used to store data and are classified as primary, secondary, or offline. Primary storage is fastest but deletes data on reboot, while secondary storage retains data regardless of power and offline storage can be removed.
- Magnetic storage devices like hard disks and tapes use magnetism to read and write, while optical devices like CDs and DVDs use lasers. Other devices include USB drives and memory cards.
- Storage devices functions are to read and write data, and they are essential components that allow computers to permanently save and access digital information.
Primary and secondary Storage devices
This presentation discusses various storage devices used in computing. It describes primary storage devices like RAM and ROM that provide temporary data storage and access. Secondary storage devices like hard disk drives, solid state drives, optical discs (CDs, DVDs, Blu-Rays), magnetic tapes, and USB flash drives provide permanent and portable data storage. The presentation covers the basic working, types, advantages and disadvantages of these common storage devices.
Secondary storage
Secondary storage devices are used to permanently store large amounts of data due to the limited storage of primary memory. They include floppy disks, hard disks, magnetic tape, pen drives, optical disks, and external drives. Secondary storage devices have higher storage capacity than primary memory but are slower, hold data permanently even when powered off, and require data to be copied to primary memory to be accessed by the CPU. They each have different characteristics in terms of storage size, portability, data access speed, and application.
Secondary Storage Devices
Secondary Storage DevicesWe Learn - A Continuous Learning Forum from Welingkar's Distance Learning Program.
Secondary storage devices are used to store data semi-permanently as primary storage is volatile. Common secondary devices include floppy disks, hard disks, CDs/DVDs, pen drives, and magnetic tapes. Floppy disks use magnetic material coated plastic disks to store data in tracks and sectors, allowing direct access. Hard disks have multiple rigid platters that spin rapidly, containing data on both sides. Data is read and written by heads positioned very close to surfaces. Pen drives use flash memory and a USB interface for portable storage. DVDs can store more data than CDs due to higher density encoding and multilayer capabilities.Secondary Storage
The document provides an overview of secondary storage, including its advantages and disadvantages. It discusses the evolution of secondary storage devices and the main types, which include magnetic tape, magnetic disks like hard disks and floppy disks, and optical disks like CDs, DVDs, and their variations. Secondary storage is used to overcome limitations of primary storage and provide virtually unlimited storage capacity to store large volumes of data permanently or for backup purposes.
Magnetic storage (1)
The document discusses various storage technologies used in computing. It describes the two primary storage types as magnetic and optical. Magnetic storage includes hard disks, diskettes, magnetic tape, and solid-state drives. Optical storage includes CDs, DVDs, and Blu-ray discs. Other technologies discussed include smart cards, USB flash drives, and RFID tags.
Storage devices
Storage devices store information to be recalled later and come in three main types: magnetic, optical, and flash memory. Magnetic storage uses disks or tapes and can be internal or external hard drives. Optical storage includes CDs, DVDs, and uses lasers to read and write data on disks. Flash memory cards have no moving parts and provide portable storage. Larger storage capacities are available but come at increased cost versus performance.
secondary storage devices
Secondary storage devices include magnetic, optical, and solid state memory. Magnetic memory includes magnetic drums, magnetic stripe cards, magnetic core memory, floppy disks, and external hard disk drives. Optical storage devices include CD-ROMs, CD-Rs, CD-RWs, and WORM CDs. Solid state memory includes USB flash drives and memory cards used in various digital devices.
Storage devices
This document discusses different types of storage devices. It describes three major technologies for computer storage: magnetic, optical, and flash memory. Magnetic storage includes internal and external hard disks, which use magnetic platters and read/write heads. Optical storage uses CDs and DVDs in read-only, write-once, or read-write formats. Flash memory storage includes cards like CompactFlash, SD cards, and USB flash drives.
Hard Disk Drive
The hard drive is the computer's main storage device that permanently stores all data. It uses rapidly rotating disks coated with magnetic material to store and retrieve digital information electromagnetically. A hard drive consists of stacked disks with data recorded in concentric circles, read and written by heads on each side of the disks as they spin. Hard drive performance is measured by data rate and seek time. Common interfaces include ATA, SATA, and SCSI.
Secondary Storage Devices
This document discusses secondary storage devices and non-volatile memory. It defines secondary storage devices as any storage beyond the primary storage that enables permanent data storage. Examples of secondary storage devices include magnetic tapes, floppy disks, DVDs, and USB drives. Non-volatile memory is any solid-state memory that can retain data without power, such as ROM, PROM, EPROM, EEPROM, and flash memory. Secondary storage saves data after the primary storage (RAM) saves it, providing permanent storage when power is turned off. Common secondary storage devices include hard drives, optical drives, and USB flash drives.
Portable storage
A portable storage device (PSD) is a small hard drive designed to hold any kind of digital data. This is slightly different from a portable media player, which stores and plays music and movies. Some are fixed size hard drives of 256GB, 320GB, etc.
CD
Compact discs are optical discs that were originally developed for storing music but later allowed the storage of other digital data. A standard CD has a diameter of 120mm and can hold up to 80 minutes of uncompressed audio or 700MB of data. CDs use a spiral track on their readable surface that is wound tightly enough to diffract light into the full visible spectrum, allowing digital information to be encoded and read with a laser. CDs have become useful for storing various types of data beyond just music.
Memory Devices
Secondary storage is required for computers for three reasons: primary storage is volatile, has limited capacity, and is more expensive than secondary storage. Secondary storage includes magnetic media like hard disks and floppy disks, as well as optical media like CDs and DVDs. These devices store large amounts of data permanently but are not directly accessible by the CPU, so they have slower access times than primary storage.
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Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
Hard disk and optical disk
Hard disks and optical disks are both used for data storage. Hard disks use spinning magnetic platters and read/write heads to store data non-volatilely even without power. Optical disks like CDs, DVDs, and Blu-Rays use lasers and reflective layers to store data in the form of pits and lands on polycarbonate disks. Optical disks allow for higher density storage than early hard disks and are portable, but have slower access speeds and more complex drive mechanisms.
Memory and storage
The document discusses various types of computer storage and memory. It describes primary storage such as RAM and cache memory that is directly accessible by the CPU. Secondary storage like hard drives and SSDs are non-volatile but not directly accessible. Tertiary storage provides very large scale storage through tape libraries and optical jukeboxes. Other storage types discussed include offline storage, network storage, flash memory, magnetic tape, solid state drives, hard drives, optical discs like CDs and Blu-rays, as well as various memory technologies.
secondarystoragedevices_by_sarthak_goel.pptx
Secondary storage devices store information even when a computer is powered off. Common secondary storage devices include floppy disks, hard disks, magnetic tapes, flash drives, and optical disks. Magnetic tapes and disks are sequential access devices that read/write data in sequence, while hard disks and optical disks are direct access devices that allow random access to data. Secondary storage provides large storage capacity at lower costs than primary storage and is used to store programs and data.
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Secondary storage devices
The document discusses different types of secondary storage devices. It describes sequential access devices like magnetic tapes that read and write data sequentially. It also describes direct access devices like hard disks that allow random access to stored data. Hard disks, floppy disks, disk packs, and zip disks are examples of magnetic disks. Optical disks like CDs, DVDs, and Blu-ray disks are also covered. Each type of secondary storage device has advantages and limitations in terms of storage capacity, access speed, portability and reusability.
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This document defines and classifies different types of storage devices:
- Storage devices are hardware used to store data and are classified as primary, secondary, or offline. Primary storage is fastest but deletes data on reboot, while secondary storage retains data regardless of power and offline storage can be removed.
- Magnetic storage devices like hard disks and tapes use magnetism to read and write, while optical devices like CDs and DVDs use lasers. Other devices include USB drives and memory cards.
- Storage devices functions are to read and write data, and they are essential components that allow computers to permanently save and access digital information.
Primary and secondary Storage devices
This presentation discusses various storage devices used in computing. It describes primary storage devices like RAM and ROM that provide temporary data storage and access. Secondary storage devices like hard disk drives, solid state drives, optical discs (CDs, DVDs, Blu-Rays), magnetic tapes, and USB flash drives provide permanent and portable data storage. The presentation covers the basic working, types, advantages and disadvantages of these common storage devices.
Secondary storage
Secondary storage devices are used to permanently store large amounts of data due to the limited storage of primary memory. They include floppy disks, hard disks, magnetic tape, pen drives, optical disks, and external drives. Secondary storage devices have higher storage capacity than primary memory but are slower, hold data permanently even when powered off, and require data to be copied to primary memory to be accessed by the CPU. They each have different characteristics in terms of storage size, portability, data access speed, and application.
Secondary Storage Devices
Secondary Storage DevicesWe Learn - A Continuous Learning Forum from Welingkar's Distance Learning Program.
Secondary storage devices are used to store data semi-permanently as primary storage is volatile. Common secondary devices include floppy disks, hard disks, CDs/DVDs, pen drives, and magnetic tapes. Floppy disks use magnetic material coated plastic disks to store data in tracks and sectors, allowing direct access. Hard disks have multiple rigid platters that spin rapidly, containing data on both sides. Data is read and written by heads positioned very close to surfaces. Pen drives use flash memory and a USB interface for portable storage. DVDs can store more data than CDs due to higher density encoding and multilayer capabilities.Secondary Storage
The document provides an overview of secondary storage, including its advantages and disadvantages. It discusses the evolution of secondary storage devices and the main types, which include magnetic tape, magnetic disks like hard disks and floppy disks, and optical disks like CDs, DVDs, and their variations. Secondary storage is used to overcome limitations of primary storage and provide virtually unlimited storage capacity to store large volumes of data permanently or for backup purposes.
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The document discusses various storage technologies used in computing. It describes the two primary storage types as magnetic and optical. Magnetic storage includes hard disks, diskettes, magnetic tape, and solid-state drives. Optical storage includes CDs, DVDs, and Blu-ray discs. Other technologies discussed include smart cards, USB flash drives, and RFID tags.
Storage devices
Storage devices store information to be recalled later and come in three main types: magnetic, optical, and flash memory. Magnetic storage uses disks or tapes and can be internal or external hard drives. Optical storage includes CDs, DVDs, and uses lasers to read and write data on disks. Flash memory cards have no moving parts and provide portable storage. Larger storage capacities are available but come at increased cost versus performance.
secondary storage devices
Secondary storage devices include magnetic, optical, and solid state memory. Magnetic memory includes magnetic drums, magnetic stripe cards, magnetic core memory, floppy disks, and external hard disk drives. Optical storage devices include CD-ROMs, CD-Rs, CD-RWs, and WORM CDs. Solid state memory includes USB flash drives and memory cards used in various digital devices.
Storage devices
This document discusses different types of storage devices. It describes three major technologies for computer storage: magnetic, optical, and flash memory. Magnetic storage includes internal and external hard disks, which use magnetic platters and read/write heads. Optical storage uses CDs and DVDs in read-only, write-once, or read-write formats. Flash memory storage includes cards like CompactFlash, SD cards, and USB flash drives.
Hard Disk Drive
The hard drive is the computer's main storage device that permanently stores all data. It uses rapidly rotating disks coated with magnetic material to store and retrieve digital information electromagnetically. A hard drive consists of stacked disks with data recorded in concentric circles, read and written by heads on each side of the disks as they spin. Hard drive performance is measured by data rate and seek time. Common interfaces include ATA, SATA, and SCSI.
Secondary Storage Devices
This document discusses secondary storage devices and non-volatile memory. It defines secondary storage devices as any storage beyond the primary storage that enables permanent data storage. Examples of secondary storage devices include magnetic tapes, floppy disks, DVDs, and USB drives. Non-volatile memory is any solid-state memory that can retain data without power, such as ROM, PROM, EPROM, EEPROM, and flash memory. Secondary storage saves data after the primary storage (RAM) saves it, providing permanent storage when power is turned off. Common secondary storage devices include hard drives, optical drives, and USB flash drives.
Portable storage
A portable storage device (PSD) is a small hard drive designed to hold any kind of digital data. This is slightly different from a portable media player, which stores and plays music and movies. Some are fixed size hard drives of 256GB, 320GB, etc.
CD
Compact discs are optical discs that were originally developed for storing music but later allowed the storage of other digital data. A standard CD has a diameter of 120mm and can hold up to 80 minutes of uncompressed audio or 700MB of data. CDs use a spiral track on their readable surface that is wound tightly enough to diffract light into the full visible spectrum, allowing digital information to be encoded and read with a laser. CDs have become useful for storing various types of data beyond just music.
Memory Devices
Secondary storage is required for computers for three reasons: primary storage is volatile, has limited capacity, and is more expensive than secondary storage. Secondary storage includes magnetic media like hard disks and floppy disks, as well as optical media like CDs and DVDs. These devices store large amounts of data permanently but are not directly accessible by the CPU, so they have slower access times than primary storage.
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Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
Hard disk and optical disk
Hard disks and optical disks are both used for data storage. Hard disks use spinning magnetic platters and read/write heads to store data non-volatilely even without power. Optical disks like CDs, DVDs, and Blu-Rays use lasers and reflective layers to store data in the form of pits and lands on polycarbonate disks. Optical disks allow for higher density storage than early hard disks and are portable, but have slower access speeds and more complex drive mechanisms.
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Secondary storage devices store information even when a computer is powered off. Common secondary storage devices include floppy disks, hard disks, magnetic tapes, flash drives, and optical disks. Magnetic tapes and disks are sequential access devices that read/write data in sequence, while hard disks and optical disks are direct access devices that allow random access to data. Secondary storage provides large storage capacity at lower costs than primary storage and is used to store programs and data.
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Computer storage consists of primary and secondary memory. Primary memory, like registers and RAM, is directly accessible by the CPU while secondary memory, like hard disks, requires input/output channels. There are different types of secondary storage such as magnetic disks, optical disks, flash memory, and tape drives. Magnetic disks store data via polarized iron particles on disks or platters. Optical disks use lasers to burn data in spiral patterns onto disks. Flash memory cards have no moving parts. Tertiary memory provides robotic mounting and dismounting of removable media.
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- Hard disk drives (HDDs) are devices used for digital data storage. They consist of rapidly rotating discs coated with magnetic material. Magnetic heads write data to and read data from the disc surfaces.
- HDDs were first introduced in 1956 and have since decreased dramatically in size and cost, becoming standard in personal computers by the late 1980s. Capacities have also increased greatly, with modern HDDs capable of storing terabytes of data.
- Optical discs like CDs and DVDs store data in the form of pits and lands on a reflective surface. They were invented in the late 1950s and early 1960s and are now commonly used to store music, video, and computer programs and data.
secondary storage devices
Secondary storage devices are non-volatile memory that stores large amounts of data at lower costs than primary memory. There are two main types of secondary storage devices: sequential access devices like magnetic tapes that are very fast for sequential data but slow for random access, and direct access storage devices (DASDs) like hard disks that allow for high-capacity random access storage. Magnetic disks are the most widely used secondary storage, offering high storage capacity, reliability, and the ability to directly access stored data.
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The document provides information about secondary storage. It begins by defining secondary storage as non-volatile, long-term storage used to store programs and data when a computer is switched off. The main types of secondary storage are magnetic storage devices like hard disk drives. Advantages of secondary storage include safety, reliability, permanence, and ability to store huge volumes of data cheaply. Disadvantages are slower speed compared to primary storage. Common secondary storage devices discussed include hard disks, optical discs like CDs and DVDs, USB flash drives, memory cards, and smart cards.
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Storage holds data, instructions, and information for future use. Common storage media include floppy disks, CDs, DVDs, tape, and flash drives. Larger storage capacities are measured in kilobytes, megabytes, gigabytes and terabytes. Optical discs like CDs and DVDs use pits and lands to store data as binary digits, while magnetic media like floppy disks and tape use magnetic particles. Flash drives, memory cards, and smart cards provide portable storage. Tape is still used for backup storage due to low cost per gigabyte.
Storage Devices .docx
These Notes from the class of BS EDUCATION 1st Semester (Spring) Session 2023-2027 Teacher :Ch Naveed Afzal
semester started in march 2023 and end in july 2023
COMPONENTS OF COMPUTER SYSTEM UNIT
COMPONENTS OF COMPUTER
System unit
WHAT IS DATA
DATA REPRESENTATION
WHAT IS BINARY
HOW TO MAKE BINARY
HOW IS A LETTER REPRESENTED IN SYSTEM PROCESSING?
WHAT IS STORAGE?
DIFFERENCE B/W MEMORY & STORAGE MEDIUM
TYPES OF STORAGE MEDIUM
1. Magnetic Tapes
2. Magnetic Disks
3. Optical Disks
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The document describes different types of storage devices including audio cassettes, video cassettes, hard disks, floppy disks, compact discs, and flash drives. It explains that audio and video cassettes use magnetic tape to store sound and video information. Hard disks use rapidly spinning magnetic disks to store data in a random-access manner. Floppy disks and compact discs are magnetic and optical storage media, while flash drives are small, removable electronic storage devices.
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The process of storing personal data or information for future use is called storage of data. Storage involves writing data to storage devices and reading it back from storage devices later. Common storage devices include hard disks, flash drives, optical discs, cloud storage, and tape drives. The amount of data a storage device can hold is called its storage capacity, which is typically measured in bytes, kilobytes, megabytes, or terabytes.
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This document discusses various computer storage devices. It begins by defining basic units of storage like bits, bytes, kilobytes, megabytes, etc. It then describes different types of primary storage devices like RAM and ROM as well as secondary storage devices like hard disks, CDs, DVDs, flash memory, and magnetic tapes. Specific storage devices are then discussed in more detail including hard disks, optical discs, magnetic disks, disk caches, and various memory cards. The document concludes by covering other older storage technologies like zip disks and super disks.
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The document discusses various data storage devices. It describes floppy disks, CDs, DVDs, hard disks, USB flash drives, and different types of ROM and RAM. Floppy disks can store up to 1.4 MB of data but newer ones can store up to 250MB. CDs standardly hold up to 80 minutes of audio or 700MB of data. DVDs have significantly higher storage capacity than CDs, able to hold up to 17GB. Hard disks use spinning magnetic disks to store data and have faster access times than removable media. USB flash drives have flash memory and are small, portable, and write/rewrite data. The different types of ROM and RAM each have their own characteristics for
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Secondary storage devices hold information regardless of whether the computer has power. Examples include hard disk drives and floppy disks. While primary storage is faster, secondary storage is needed for today's computers to store programs and personal data due to limitations on primary storage sizes and prices. Common secondary storage devices discussed include hard disks, CD-ROMs, CD-Rs, USB flash drives, and memory cards.
Storage devices
This document summarizes different types of computer storage devices. It discusses basic units of data storage such as bits, bytes, kilobytes etc. It describes different data access methods for storage devices including random access memory and sequential access memory. The document provides details about various storage devices like magnetic disks, optical disks, solid state drives, USB flash drives and memory cards. It explains technologies like hard disks, floppy disks, zip disks, CDs, DVDs and Blu-ray disks.
Media Storage
This document summarizes different types of computer storage devices. It discusses basic units of data storage such as bits, bytes, kilobytes etc. It describes different data access methods for storage devices including random access memory and sequential access memory. The document provides details about various storage devices like magnetic disks, optical disks, solid state drives, USB flash drives and memory cards. It explains technologies like hard disks, floppy disks, zip disks, CDs, DVDs and Blu-ray disks.
DIRECT ACCESS STORAGE DEVICES
Direct access storage devices (DASDs) include magnetic disks, optical storage devices, and flash memory. Magnetic disks can be fixed-head or movable-head. Movable-head disks use a disk pack of stacked platters and read/write heads that move together to access data located in cylinders. Optical storage uses lasers to read microscopic pits on disks like CDs, DVDs, and Blu-ray discs, allowing more data storage than magnetic disks. Flash memory uses transistors to store data in blocks that must be erased before being rewritten.
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Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
Librarians are leading the way in creating future-ready citizens – now we need to update our spaces to match. In this session, attendees will get inspiration for transforming their library spaces. You’ll learn how to survey students and patrons, create a focus group, and use design thinking to brainstorm ideas for your space. We’ll discuss budget friendly ways to change your space as well as how to find funding. No matter where you’re at, you’ll find ideas for reimagining your space in this session.
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience Wahiba Chair Training & Consulting
Wahiba Chair's Talk at the 2024 Learning Ideas Conference. clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Aberdeen
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
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Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
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https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdWalmart Business+ and Spark Good for Nonprofits.pdf
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
Hindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Advanced Java[Extra Concepts, Not Difficult].docx
This is part 2 of my Java Learning Journey. This contains Hashing, ArrayList, LinkedList, Date and Time Classes, Calendar Class and more.
Leveraging Generative AI to Drive Nonprofit Innovation
In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.Recently uploaded (20)
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Leveraging Generative AI to Drive Nonprofit Innovation
Leveraging Generative AI to Drive Nonprofit Innovation
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Secondary Storage
- 2. Storage Media Size Storage Capacity Accesstype Portability Floppy disk 31/2" 1.44 Mb Direct High Tapes/Cassettes vary vary/ 8 Mb Sequential Medium Zip disk 31/2" 750 Mb Direct low Hard disk 3.5” up to 500TB Direct N0
- 3. Use Light to read or write data Use a mechanical moving arm to Read or write data Electrically reads or write data
- 4. Storage is either: Optical – media e.g. CD-ROM, DVD, CD-R, CD-RW, Blu-ray Magnetic – media e.g. floppy disk, hard drive, zip disk, tape Circuit Chips - (removable media) e.g. flash drive/jump drive/memory sticks/memory cards
- 5. Magnetic This is a magnetically coated strip of plastic on which data can be encoded. Tapes are sequential access media, ▪ tape Disk are Direct access storage media ▪ . CD-ROM, DVD, CD-R, CD-RW, Blu-ray ▪ floppy disk, hard drive, zip disk
- 6. The groove on a vinyl record is analog; a series of detailed bumps wherein the larger the bump the louder the noise. On a CD, the digital data is recorded in a binary form, meaning a series of zeros and ones, either off or on.A laser beam is focused onto the track, which reflects back from the shiny aluminum surface of the disc. Reflecting back is a one… “on”.To record data, a stronger laser has burned a little pit onto the shiny surface.When the reading laser passes that pit, it does not reflect back, indicating a zero or “off”. Optical media
- 8. A)Track, B) Sector track, C) Sector, D) Cluster Magnetic media
- 9. . Hard disk Controller - is the software interface that enables the computer to read from and write information to the hard disk drive. Magnetic media
- 10. The HDC is specifically referred to by the type of technology used such as IDE - Integrated Drive Electronics SATA - Serial AdvancedTechnology Attachment SCSI – Small Computer Standard interface USB - IDE Cable SATA Cable SCSI Cable Magnetic media
- 11. Micro Fiche Micro FilmMagnetic media
- 12. Flash memory is a non-volatile computer storage chip that can be electrically erased and reprogrammed. It was developed from EEPROM (electrically erasable programmable read-only memory) and must be erased in fairly large blocks before these can be rewritten with new data. The high density NAND type must also be programmed and read in (smaller) blocks, or pages, while the NOR type allows a single machine word (byte) to be written and/or read independently. Circuit media