Chapter 5 Storage Devices - FTMS

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CSCA0101 computing Basics1CSCA0101COMPUTING BASICSChapter 5Storage DevicesCSCA0101 computing Basics2Storage Data of Device Examples of Storage DeviceCSCA0101 computing Basics3Storage DevicesStorage Devices Astoragedeviceisusedinthecomputerstostor ethedata. computing Basics4Storage DevicesTypesofStorageTherearefourtypeofs torage: Primary Storage Secondary Storage Tertiary Storage Off-line StorageCSCA0101 computing Basics5Storage DevicesPrimaryStorage Alsoknownasmainmemory. Mainmemoryisdirectlyorindirectlyconnecte dtothecentralprocessingunitviaamemorybus . TheCPUcontinuouslyreadsinstructionsstore dthereandexecutesthemasrequired. Example: RAM ROM CacheCSCA0101 computing Basics6Storage DevicesPrimaryStorageRAM ItiscalledRandomAccessMemorybecauseanyof thedatainRAMcanbeaccessedjustasfastasany oftheotherdata. There are two types of RAM: DRAM (Dynamic Random Access Memory) SRAM (Static Random Access Memory)CSCA0101 computing Basics7Storage DevicesPrimaryStorageRAMStatic RAMDynamic RAM Faster More expensive More power consumption does not need to be refreshed Slower Less expensive Less power consumption needs to be refreshed thousands of times per secondCSCA0101 computing Basics8Storage DevicesPrimaryStorageROM Thismemoryisusedasthecomputerbeginstoboo tup.

CSCA0101 Computing Basics 3 Storage Devices Storage Devices • A storage device is used in the computers to store the data. • Provides one …

  Computing, Devices, Chapter, Storage, Chapter 5 storage devices