STORAGE DEVICE Definition A storage device can be defined as any piece of hardware whose main function is to store data and information The hardware that writes data to or reads data from a storage medium is called a storage device. Types of Computer Storage Devices Computer storage devices can be classified into o Primary storage o Secondary storage o Tertiary storage Primary Computer Storage Devices Primary storage refers to the computer’s memory(RAM) RAM (Random Access Memory)
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Types of Storage Devices Physical components or materials on which data is stored are called storage media. Hardware components that read/write to storage media are called storage devices. Two main categories of storage technology used today are magnetic storage and optical storage. Primary magnetic storage o Diskettes o Hard disks (both fixed and removable) o High capacity floppy disks o Disk cartridges o Magnetic tape Primary optical storage o Compact Disk Read Only Memory (CD ROM)
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Secondary Storage Devices COMPUTER Compiled by Belieber9N Class - IX PROJECT Secondary Storage Devices As we all know that the main memory stores the data in a temporary manner which means all the data will be lost when the power goes off. To keep our data safe we use secondary storage devices. These are used for storing the data in a permanent manner so that all the data will remain stored whether the power is switched on or switched off‚ the power will never
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Magnetic backing storage media Stores the binary data on a disk or tape coated with a material that can be magnetised differently‚ depending on whether a 0 or 1 is stored. used for tertiary and off-line storage. Data stored in backing storage is permanent so it is NOT lost when the computer is turned off. It is always slower to access data from backing storage than from internal memory. Fixed hard disks A hard-drive built into the case of the computer is known as ‘fixed’. Most computers have one.
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Limitations of Primary Memory: Limited capacity because the cost per bit of storage is high Volatile - data stored in it is lost when the electric power is turned off or interrupted. So as a result additional memory called auxiliary memory or secondary memory is used. Following are the features of Auxiliary or Secondary Storage: 1. Permanent or Non-volatile Storage: The data which is stored in those devices is not lost when the power is switched off. The data is retained. 2. Voluminous
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The need for more storage is growing. The amount of data produced is doubling in every two years. (in 2010 – 1.8 zettabytes) The cost of creating‚ managing and storing the data is decreasing‚ but can the optical storage expand further? The current Blu-ray lasers emit light in the blue part of the electromagnetic spectrum (about 420 nanometer wavelength). There are ongoing researches using UV light‚ that would probably have to be 200 nm and would provide storage capacities of over 100 GB in a single
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32/74 Transport and storage 6.2 Product storage vapor state corrosion inhibitors (VSI 8235)‚ and external protection in the form of temperatures for about 12 months. 6.2.1 DANGER Unsecured motor can fall! Danger to life or risk of injury‚ damage to equipment! falling. CAUTION Incorrect placement of the motor! Risk of damage to equipment. When in storage with shaft vertical‚ the motor must always be placed with the hollow shaft facing down. It is also advisable to provide
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Ekanayake IS022 3/20/2014 Access Methods of Secondary Storage Devices Secondary Storage Device is storage medium which is used to store large amount of data permanently until it is changed by user. Though it stores information‚ it cannot be accessed directly by the CPU. The data stored in Secondary Storage Device can be accessed depending upon how it is stored on the device. Mainly there are two methods of accessing data from the Secondary Storage Device. 1) Sequential Access Method 2) Direct Access
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Cloud Storage I Need a Place to Store My Stuff In one of his comedic sketches‚ George Carlin talked about the whole point of life was to acquire new stuff. With the acquisition of new possessions‚ a place to store them becomes necessary‚ thus bigger houses are purchased to provide more space for storage of our possessions or companies are paid for storage spaces. The same can be said about computer information‚ as data accumulates storage needs increases. To satisfy that need‚ larger hard disk
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| Assignment Futuristic Computer System Storage Devices | | | Introduction to IT | This is an assignment work for Introduction to IT. | Course: Index Introduction 3 Futuristic Storage Devices & Technologies 4 Object-based Storage Devices or Technology 5 Holographic Memory 6 Conclusion 7 Introduction: This publication is an assignment work for my Introduction to IT class. Some of the projected
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