Physical Memory Review

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Physical Memory Review. Temporarily holds data and instructions as CPU processes them Two categories ROM Retains its data when PC is turned off Stores data on chips socketed or soldered to circuit boards RAM Loses its data when PC is turned off Housed on SIMMs, DIMMs. - PowerPoint PPT Presentation

Text of Physical Memory Review

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Physical Memory ReviewTemporarily holds data and instructions as CPU processes themTwo categoriesROMRetains its data when PC is turned offStores data on chips socketed or soldered to circuit boardsRAMLoses its data when PC is turned offHoused on SIMMs, DIMMsROM on the MotherboardConsists of memory chips that contain programs (ROM BIOS) that are acid-etched into the chips and cannot be changedEPROM (erasable programmable ROM) and EEPROM (electrically erasable programmable ROM) chips can be reprogrammedROM on the Motherboard

RAM on the MotherboardServes as main memoryProvides a memory cacheTwo categoriesDynamic RAM (DRAM)Needs to be refreshed by the memory controllerUsually stored on DIMMsStatic RAM (SRAM)DRAM Storage

SRAM Storage

RAM Chips

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Physical Memory Review

Examples of Memory Modules

Types of RAM Modules

Installing MemoryProtect chips against static electricityUse a ground braceletTurn off power and remove cover to caseHandle memory modules with care DIMM PINs DIMM RAM

Installing a DIMM ModuleInstalling a DIMM Module

DIMM

DIMM

DIMM

AT Form FactorATX Form Factor

How Much Memory Is Installed

- - - BIOS CMOS CMOS

- Ram RAM

RAM insufficient memory Ram . : . :

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