Secondarystoragedevice
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Secondary storage devices are computer memory that is not directly accessible to the CPU and is used to store data that is not in active use. It has higher storage capacity than primary storage but is slower. Common secondary storage devices include hard disks, floppy disks, CDs, DVDs, USB flash drives, and memory cards. Secondary storage is non-volatile, meaning data remains even when the computer is turned off.
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This document discusses the different types of computer storage devices. It describes primary storage (RAM), secondary storage (hard disks), and removable storage media. RAM is volatile memory that the CPU can directly access for active data and instructions. ROM is read-only and stores permanent functions. Hard disks are magnetic devices that serve as non-volatile secondary storage and can store large amounts of data. Removable media includes USB drives, memory cards, optical discs like CDs and DVDs, magnetic tapes, and external hard disks, which allow portable transfer and storage of data.
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This presentation helps to understand easily storage devices with interactive look with a easy and efficient way. It may reduce the hurdles which are usually comes while we are trying to listen or understand the overall structure of Storage Devices.
Hope it may help you in your Educational and professional life.
Thanks.
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This document discusses various types of storage devices and storage media technologies. It covers magnetic storage devices like hard disks, optical storage like CDs and DVDs, solid state drives, removable storage media like USB flash drives, and various storage capacity units. Key points covered include the components and workings of hard disks, differences between internal and external hard disks, RAID configurations, characteristics of SSDs compared to hard disks, and overview of various memory card formats.
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Hard disk drives (HDDs) and solid state drives (SSDs) are the primary types of data storage used today. HDDs store data magnetically on spinning disks, making them slower with moving parts but cheaper for high storage needs, while SSDs use non-volatile memory without moving parts for faster access times but at higher cost per gigabyte of storage. The first HDD invented in the 1950s weighed over a ton with only 5MB capacity, showing how far storage technology has advanced.
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This document discusses various secondary storage devices, including floppy disks, hard disks, CDs, DVDs, USB drives, and Blu-ray discs. It provides details on the history and evolution of floppy disks, describing their decreasing sizes over time from 8 inches to 3.5 inches. Hard disks are described as using rapidly rotating discs coated with magnetic material to store and retrieve data. CDs, DVDs, and Blu-ray discs are all described as optical storage using lasers, with each subsequent technology providing higher storage capacity and data transfer speeds.
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This document discusses the different types of computer storage devices. It describes primary storage (RAM), secondary storage (hard disks), and removable storage media. RAM is volatile memory that the CPU can directly access for active data and instructions. ROM is read-only and stores permanent functions. Hard disks are magnetic devices that serve as non-volatile secondary storage and can store large amounts of data. Removable media includes USB drives, memory cards, optical discs like CDs and DVDs, magnetic tapes, and external hard disks, which allow portable transfer and storage of data.
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This presentation helps to understand easily storage devices with interactive look with a easy and efficient way. It may reduce the hurdles which are usually comes while we are trying to listen or understand the overall structure of Storage Devices.
Hope it may help you in your Educational and professional life.
Thanks.
Storage devices(present)
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How to take care of computers and secondary storage media
The document discusses different types of storage media and devices including floppy disks, compact discs, thumb drives, and hard disk drives. It provides details on the composition and storage capacity of each. Floppy disks can store up to 1.44 MB, CDs up to 4 GB, thumb drives up to 16 GB, and hard drives up to 1 TB. Taking proper care of storage media involves avoiding touching the inside, keeping away from magnets, and protecting from heat, dust, and other damage. Similarly, computers and peripherals should be cleaned regularly inside and out to function properly for longer.
Secondary storage devices
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Storage devices
This lesson includes the following sections:
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Storage devices hold data, even when the computer is turned off.
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The two primary storage technologies are magnetic and optical.
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Compact Disk Read-Only Memory (CD-ROM) A magnetic disk's medium contains iron particles, which can be polarized—given a magnetic charge—in one of two directions.
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Storage devices
Storage devices can be classified as either removable or non-removable. Common removable storage devices include floppy disks, CDs/DVDs, magnetic tapes, memory sticks, flash memory cards and portable hard disks. Non-removable storage includes fixed hard disks which are used to store large amounts of data like operating systems and software. Primary memory is volatile and secondary memory is non-volatile.
Ch5 storagedevices(updated)
This chapter describes different types of storage devices used in computers. It discusses magnetic storage devices like hard disks and floppy disks, which use magnetism to store data. Optical storage devices like CDs and DVDs are also covered, which use lasers to read and write data. Finally, solid-state storage options like flash memory, smart cards, and solid-state drives are introduced. The document provides details on how each storage type works and its common uses. It also discusses topics like formatting disks, finding data locations, and measuring/improving drive performance.
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storage devices
Primary storage refers to memory like RAM and ROM, while secondary storage refers to peripheral devices like disks and tapes used for additional storage. Secondary storage is required for three reasons: data in memory is volatile and can be lost, memory capacity is limited, and memory is more expensive than secondary storage. Common secondary storage devices include floppy disks, hard disks, and optical disks like CDs and DVDs, as well as tape backups. Floppy disks can store 1-100 MB of data but are small and portable. Hard disks can store hundreds of GB but are fixed internally; removable hard disks also exist. Optical disks like CDs and DVDs can store large amounts of data quickly but DVDs store more data and
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The document discusses different types of storage media and devices including floppy disks, compact discs, thumb drives, and hard disk drives. It provides details on the composition and storage capacity of each. Floppy disks can store up to 1.44 MB, CDs up to 4 GB, thumb drives up to 16 GB, and hard drives up to 1 TB. Taking proper care of storage media involves avoiding touching the inside, keeping away from magnets, and protecting from heat, dust, and other damage. Similarly, computers and peripherals should be cleaned regularly inside and out to function properly for longer.
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Secondary storage devices are used to permanently store files and data when the computer is turned off. Common secondary storage devices include hard disk drives, CDs, DVDs, Blu-Ray discs, floppy disks, zip discs, pen drives, memory cards, and magnetic tapes. Hard disk drives are most often used due to their high storage capacities and fast access times, while tape drives can store large amounts of data compactly but have slower access speeds.
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Parallel computing
Parallel computing involves breaking problems into discrete parts that can be solved concurrently using multiple processors. There are different forms of parallel computing including bit-level, instruction-level, data, and task parallelism. Parallel computing allows solving larger and more complex problems faster while making better use of underlying parallel hardware through sharing memory and resources across processors.
Storagelesson
The document summarizes the purpose and types of computer storage. It explains that computers use hard disks located inside and removable disks like floppy disks or CDs externally to store data. Hard disks use magnetism to store binary data on metal disks, while CDs use pits and lands to reflect laser light in patterns representing data. External disks allow transferring data between computers and backing up important files in case of computer issues.
Storage Devices
Optical storage devices like CDs, DVDs, and Blu-rays provide permanent storage of data but cannot be reused once written, making them suitable for archiving. They allow random access of specific data and are widely used, though write speeds can be slow. Solid state storage like memory sticks and flash cards allow portable, robust storage of large amounts of data but are more expensive and risk being lost or broken than optical discs.
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The document summarizes the different types of computer memory. It discusses that memory is used to store data and instructions and can retrieve information when needed. It defines the basic unit of memory as a bit, which can have a value of 0 or 1. There are two main types of computer memory: primary/internal memory and secondary/external memory. Primary memory includes ROM and RAM, which are fixed inside the CPU and used for temporary data/instructions. Secondary memory refers to external storage devices like hard disks, CDs, DVDs, and pen drives, which are used to store large volumes of data.
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Storage devices
This lesson includes the following sections:
Categorizing Storage Devices
Magnetic Storage Devices
Optical Storage Devices
Storage devices hold data, even when the computer is turned off.
The physical material that actually holds data is called a storage medium. The surface of a floppy disk is a storage medium.
The hardware that writes data to or reads data from a storage medium is called a storage device. A floppy disk drive is a storage device.
The two primary storage technologies are magnetic and optical.
Diskettes (floppy disks)
Hard disks
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Disk cartridges
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Compact Disk Read-Only Memory (CD-ROM) A magnetic disk's medium contains iron particles, which can be polarized—given a magnetic charge—in one of two directions.
Each particle's direction represents a 1 (on) or 0 (off), representing each bit of data that the CPU can recognize.
A disk drive uses read/write heads containing electromagnets to create magnetic charges on the medium.
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CD-Recordable (CD-R)
CD-Rewritable (CD-RW)
PhotoCD
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External storage devices are used to store large amounts of data beyond what can fit in a computer's internal memory. They include hard disks, which store data magnetically on spinning platters; optical disks like CDs and DVDs, which use lasers to read and write data; and flash memory, a solid-state memory that retains data without power. External storage provides additional capacity, allows data to be transported easily, and acts as a backup in case of computer problems like fires or theft.
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Primary memory, also known as main memory or internal memory, is directly accessible to the CPU and holds temporary data during program execution. It includes RAM, ROM, PROM, and EPROM. Secondary memory, also called external memory or auxiliary memory, provides larger storage and retains data when power is removed. Common examples are hard disks, CD-ROMs, magnetic tapes, and flash memory. Secondary memory is organized into files and directories for abstraction and includes additional metadata.
Storage devices
There are two types of computer storage: primary and secondary. Primary storage includes RAM and ROM, while secondary storage consists of removable, internal, and external devices like hard drives, floppy disks, CDs, DVDs, and external hard drives. Secondary storage is used to store programs and data even when the computer is powered off, since it retains information without power unlike primary storage.
Storage devices
Storage devices come in various types to suit different needs. Internal memory like ROM, RAM, and hard disks are built into computers, while external devices like floppy disks, zip disks, magnetic tapes, CDs/DVDs, and flash drives can transfer and store data. Larger capacity devices like hard disks, DVDs, and flash drives let users store more data than older options like floppy disks, but may be more expensive or fragile. The appropriate storage device depends on needs like data size, portability, and hardware compatibility.
Storage device
This document discusses different types of storage devices including optical storage devices. It provides a brief history of optical storage including the introduction of CDs in 1983, DVDs in 1996, and Blu-Ray in 2002. It describes how optical storage works by making marks on an optically readable medium that can be read back with a laser, and how data is stored in pits and lands. The document also outlines other storage devices like hard drives, solid state drives, flash memory, and magnetic storage devices.
Storage devices
Storage devices can be classified as either removable or non-removable. Common removable storage devices include floppy disks, CDs/DVDs, magnetic tapes, memory sticks, flash memory cards and portable hard disks. Non-removable storage includes fixed hard disks which are used to store large amounts of data like operating systems and software. Primary memory is volatile and secondary memory is non-volatile.
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This chapter describes different types of storage devices used in computers. It discusses magnetic storage devices like hard disks and floppy disks, which use magnetism to store data. Optical storage devices like CDs and DVDs are also covered, which use lasers to read and write data. Finally, solid-state storage options like flash memory, smart cards, and solid-state drives are introduced. The document provides details on how each storage type works and its common uses. It also discusses topics like formatting disks, finding data locations, and measuring/improving drive performance.
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This document discusses and compares various types of optical storage media and solid state storage devices. It covers CDs, DVDs, Blu-ray discs, solid state drives, memory sticks, and flash memory cards. For each type it provides key details like storage capacity, advantages like portability, and disadvantages such as being read-only or breakable.
[ICT] Storage Devices
This document discusses computer memory and storage devices. It defines storage devices as components that can read and write to storage media like CDs/DVDs. Memory can be primary (RAM and ROM) or secondary (hard disks, CDs, DVDs). Primary memory is volatile and temporary while secondary memory provides permanent storage. The document also defines units of storage like bits, bytes, kilobytes, megabytes and gigabytes. It describes different types of storage access and various backup methods and solutions.
storage devices
Primary storage refers to memory like RAM and ROM, while secondary storage refers to peripheral devices like disks and tapes used for additional storage. Secondary storage is required for three reasons: data in memory is volatile and can be lost, memory capacity is limited, and memory is more expensive than secondary storage. Common secondary storage devices include floppy disks, hard disks, and optical disks like CDs and DVDs, as well as tape backups. Floppy disks can store 1-100 MB of data but are small and portable. Hard disks can store hundreds of GB but are fixed internally; removable hard disks also exist. Optical disks like CDs and DVDs can store large amounts of data quickly but DVDs store more data and
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- 1. SECONDARY STORAGE DEVICES Section I : Chapter No. 4
- 3. Classification of Hardware Hardwares of Personal Computers Figure 2. Classification of Hardware. Input Devices 1 Processing Unit 2 Storage Devices 3 Output Devices 4 Key: Data flow
- 4. What are Types of Storage Devices? Hardwares of Personal Computers Figure 3. Classification of storage devices. Storage Devices Primary Storage Secondary Storage Read-Only Memory (ROM) Random-Access Memory (RAM)
- 8. Secondary Storage Hardwares of Personal Computers CD-Rom CD-R CD-RW Data can be Read only Read but write once Read & write Data capacity (MB) 650 650 650
- 9. Secondary Storage Hardwares of Personal Computers DVD ( Digital Versatile Disk or Digital Video Disk ) DVD-R / DVD+R DVD-RW / DVD+RW Data can be Read only Read but write once Read & write Data capacity (GB) Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5
- 11. Secondary Storage Hardwares of Personal Computers Figure 6. A C-R disk. Figure 7. A CD-RW disk.
- 12. Secondary Storage Hardwares of Personal Computers Figure 8. A DVD-R disk. Figure 9. A DVD+RW disk.
- 15. Various Types of Memory Cards Hardwares of Personal Computers Figure 12. Various types of memory cards. SM Card SD Card CF Card xD card Memory Stick Microdrive
- 16. THANK YOU Hardwares of Personal Computers Suhas Subramanian Mangesh Tilve Anita Rajan Usha Sawant Rachna Amarnani Shilpa Shinde