Alina FratilaLecture Assignment #2
Chapter 3: Storage Devices
Description Purpose Type of Access:
Random (or sometimes called direct access) OR sequential Storage Capacity Type of Storage: Magnetic, Optical OR Flash Memory Advantage Disadvantage Magnetic (internal) hard drive Data storage - Magnetic hard drive w metal hard disks or platters and read/write heads and an access mechanism. Design to store data for desktops and laptops Random magnetic Robust and can be used many years They are not design to be removed and used by itself They have moving parts so they can break more easllySolid-State (internal) drive Data storage device - Hard drives that use flash memory Portable computers and mobile devices, notebooks Random Flash memory Not subject to magnetic failures Consume less power, much faster, smaller Cost much more
USB flash drive A self-contained unit that connects to a computer or another device via a standard USB port. For data to be carried anywhere and easily, lock a computer Random Flash memory Very small and very portable, many formats available, carry biometric features for safety Easy to brake, loose, get, need of a us Smart card Credit card piece of plastic that has built in computer components: processor, memory and storage. Used for payments of identification purposes, security random magnetic Even if it is so small data can be restored, added or deleted – perform computations Store very small amounts of data Flash memory card A small card containing one or more flash memory chips, one pf the most common types of flash memory media Storage media for digital cameras, portable digital cameras, mobile phones, portable devices, store data from a personal computer and to transfer data. Random Flash memory Available in a variety of formats and sizes even mobile sizes : can be used with any kind of device with the adapters they come with ; Wi-Fi-enabled Easy to loose Magnetic tape A plastic tape coated with a magnetizable substance that...
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