Storage Devices
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The document discusses different types of optical discs including CDs, DVDs, HD-DVDs, and their advantages and disadvantages. CDs and DVDs can only be written to once, while rewritable discs like DVD-RAM can be rewritten many times but are more expensive. Larger storage discs like HD-DVD provide high quality pictures but the discs themselves are not cheap. USB flash drives are small, portable storage but also more expensive per gigabyte than optical discs and can be easily lost.
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The document discusses different types of optical storage devices, including their uses, advantages, and disadvantages. CDs and DVDs can hold large files like movies and are portable but breakable. Rewritable variants like CD-RWs and DVD-RWs allow updating information but are more expensive. Newer technologies like Blu-ray can store more high definition data but are also more costly than predecessors. Memory cards and USB drives provide portable storage with speed but have limited write cycles and capacity compared to electromechanical disks.
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Optical backing storage media such as CDs and DVDs can store large files, with CDs holding files smaller than 1Gb such as music and DVDs holding several Gb such as movies. Both CDs and DVDs are portable and can store computer data. CD-ROMs can store data permanently but cannot delete or edit saved data, while CD-RWs and DVD-RWs allow updating of information by recording over old data. Blu-ray discs have the largest storage capacity of optical media. Solid state storage and memory sticks are more robust forms of removable storage that are smaller and more easily transported than optical discs.
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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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Optical backing storage media such as CDs and DVDs can store large files, with CDs holding files smaller than 1Gb such as music and DVDs holding several Gb such as movies. Both CDs and DVDs are portable and can store computer data. CD-ROMs can store data permanently but cannot delete or edit saved data, while CD-RWs and DVD-RWs allow updating of information by recording over old data. Blu-ray discs have the largest storage capacity of optical media. Solid state storage and memory sticks are more robust forms of removable storage that are smaller and more easily transported than optical discs.
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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 & media
This document summarizes different types of storage devices and media, including their basic functions and uses. It discusses magnetic devices like floppy disks, hard drives, and tape; optical media like CDs, DVDs, and Blu-ray discs; and solid state drives like USB flash drives, memory cards, and SSDs. For each type, it provides details on how they work, common applications, and advantages and disadvantages compared to other options. The document aims to explain the key characteristics and purposes of various storage technologies.
ITBIS105 5
Storage devices such as floppy disks, hard disks, CDs, DVDs, and tape are used to store digital data outside of the computer's main memory. Floppy disks store data on flexible magnetic disks inside a protective case. Hard disks store larger amounts of data than floppy disks on rigid magnetic platters inside a sealed case. CDs and DVDs store large amounts of fixed data and programs on compact discs that can only be read from. Tape is used for backup storage and can store large amounts of data sequentially. Proper ergonomics are important when using computers and mobile devices to prevent injury.
Backing Storage
Backing storage is needed because main memory has limited storage. Backing storage devices include magnetic storage like hard disks, optical storage like CDs and DVDs, and solid state storage like memory cards and solid state drives. Magnetic storage uses magnetic fields to store data on disks or tape. Optical storage uses lasers to read pits and lands on disks. Solid state storage has no moving parts and is used in devices like memory cards, USB flash drives, and solid state drives. Interfaces like SATA, USB, and Thunderbolt allow backing storage devices to connect to computers.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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