Transcription of Chapter 5 Storage Devices - FTMS
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Chapter 5 Storage Devices - FTMS
CSCA0101 computing Basics1 CSCA0101 computing BASICSC hapter 5 Storage DevicesCSCA0101 computing Basics2 Storage Data of Device Examples of Storage DeviceCSCA0101 computing Basics3 Storage DevicesStorage Devices Astoragedeviceisusedinthecomputerstostor ethedata. computing Basics4 Storage DevicesTypesofStorageTherearefourtypeofs torage: Primary Storage Secondary Storage Tertiary Storage Off-line StorageCSCA0101 computing Basics5 Storage DevicesPrimaryStorage Alsoknownasmainmemory. Mainmemoryisdirectlyorindirectlyconnecte dtothecentralprocessingunitviaamemorybus . TheCPUcontinuouslyreadsinstructionsstore dthereandexecutesthemasrequired. Example: RAM ROM CacheCSCA0101 computing Basics6 Storage DevicesPrimaryStorageRAM ItiscalledRandomAccessMemorybecauseanyof thedatainRAMcanbeaccessedjustasfastasany oftheotherdata. There are two types of RAM: DRAM (Dynamic Random Access Memory) SRAM (Static Random Access Memory)CSCA0101 computing Basics7 Storage DevicesPrimaryStorageRAMS tatic RAMD ynamic 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 Basics8 Storage 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 …
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