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5 Cards in this Set
- Front
- Back
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RAM |
Random Acces Memory - the most common./ Memory is (not=) the hard drive(HDD) storage./ Data and programs can only be used when moved in the RAM. |
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ROM |
ReadOnlyMemory-can't be changed or erased./ PROM - Programmable ROM - write once./ EPROM - Erasable PROM - write,erase,re-write./ EEPROM - Electrically Erasable PROM - flash memory./ |
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SRAM
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Static RAM - very fast memory./ very expensive memory./ big memory./ Used often in processor caches L1,L2,L3./ No refreshing but still volatile./
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DRAM |
Dynamic Random Acces Memory - the RAM we know. /Dynamic - needs constant refreshing. / without refreshing, the data in memory disappears./ SDRAM - Synchronous DRAM - synchronous with the system clock(133 MHz clock = PC133)./ RDRAM -Rambus(Inc.) and Intel partnership./ |
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(DDR)SDRAM |
Double Data Rate SDRAM - twice the data rate as SDRAM./ (16) DDRAM2 SDRAM - Enhanced electrical interface, buffers, twice as fast, off-chip drivers./ (32) DDRAM3 SDRAM - Twice the data rate of DDR2, larger chip capacities./ (64) |
