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6163940


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, RAM . , RAM . , , RAM. RAM 130 180 , 30 40 .


Parameter ram ram

Parameter RAM (RAM )

PRAM. RAM Macintosh , , , , . PRAM ,

Video RAM ( RAM)

VRAM. RAM , , RAM. VRAM - . VRAM , , - .


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(Random Access Memory - RAM):

(t) , ... t = const. () ;

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Static RAM ( RAM) SRAM. , , . , RAM . RAM , RAM. RAM 15 30 - ( 60 ) . , - .


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DRAM - Dynamic Random Access Memory:

/. . - , p-n MOS . Cache- , ;

ROM - Read-Only Memory:

. . - . RAM, . () ROM. i, n Di . ROM:

- EPROM - Erasable Programmable ROM:

ROM: . , -, ;


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-EEPROM - Electrically Erasable Programmable ROM:

-FLASH-:

EEPROM . (Main Board) BIOS (Basic Input-Output System), ( ) ROM ( ) BIOS. , 16 Gbytes 10 000 . 1988 . . :NOR(NOT OR) NAND(NOT AND). .


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- SBC (Single Bit per Cell). MLC (Multi level Cell), . ( FLASH ), - EEPROM, .

FLASH- , ( 10 000 ). , , . , , ( - -NAND).

RAM DRAM - . CD DVD . , - .

: - FLASH 16GB. .


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, , FLASH- , , , MP3-, PDA . USB (FLASH USB ) . (, , )

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.


Cache

, , , CACHE-.


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:

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  • () , , . . / , -TopofStack (TOS). TOS :

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i. CS (Chip Select), . 2 2048 1 .

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a :

-, , , . P6 4, 2, 4 .. ( - Folder). . ( 3 - CR3) . Intel, - Privilege Level (PL). , :


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