Dynamic random access memory (DRAM) is a type of random access memory that stores each bit of data in a separate capacitor. As real-world capacitors are not ideal and hence leak electrons, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory. Its advantage over SRAM is its structural simplicity: only one transistor and a capacitor are required per bit, compared to six transistors in SRAM. This allows DRAM to reach very high density. Since DRAM loses its data when the power supply is removed, it is in the class of volatile memory devices.
click here:http://en.wikipedia.org/wiki/Dynamic_random_access_memory
2006-10-28 07:06:24
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answer #1
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answered by Anonymous
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Dynamic random access memory (DRAM) is a type of random access memory that stores each bit of data in a separate capacitor. As real-world capacitors are not ideal and hence leak electrons, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory. Its advantage over SRAM is its structural simplicity: only one transistor and a capacitor are required per bit, compared to six transistors in SRAM. This allows DRAM to reach very high density. Since DRAM loses its data when the power supply is removed, it is in the class of volatile memory devices.
2006-10-28 12:29:13
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answer #2
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answered by a7jdw 1
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It's Double Data Rate RAM (Random Access Memory). It's the kind of memory that your computer uses. It plugs into strips on your motherboard.
It's actually called DDR RAM. It operates at roughly twice the speed of SDRAM (Synchronous Dynamic Random Access Memory), but there's a faster memory than that available now. It's called DDR2 RAM (Double Data Rate x 2 RAM), which operates at roughly 4 times the speed of SDRAM, and companies are presently working on releasing DDR4 RAM. I guess you can work out that that's faster still.
Of course, you need to have a motherboard that's capable of running any of these varieties of RAM. You can't simply plug in DDR2 RAM, hoping that it will boost your computer's speed. It won't physically fit into the RAM slots on your motherboard.
2006-10-28 13:37:31
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answer #3
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answered by micksmixxx 7
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Dynamic random access memory (DRAM) is a type of random access memory that stores each bit of data in a separate capacitor. As real-world capacitors are not ideal and hence leak electrons, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory. Its advantage over SRAM is its structural simplicity: only one transistor and a capacitor are required per bit, compared to six transistors in SRAM. This allows DRAM to reach very high density. Since DRAM loses its data when the power supply is removed, it is in the class of volatile memory devices.
click here:http://en.wikipedia.org/wiki/dynamic_ran...
2006-10-28 08:16:20
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answer #4
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answered by stfreddy77 2
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Ram is the memory that your computer has. It is used to run programs. DD ram is the type of memory that you are using. If you look at your total memory and multiply it by 1.5, you get your total available virtual memory, which is used to loop programs through to run more effeciantly. SDDR ram can be multiplied by 2.
2006-10-28 07:07:42
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answer #5
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answered by Anonymous
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Double Data Rate DRAM. That's far from the whole story, but that's what it means... it's just not what it actually does. One of the many small variations on the theme of memory that forgets if you don't keep talking to it.
2006-10-28 07:11:46
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answer #6
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answered by Chris H 6
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double data rate memory[ddr ram] has 2 lanes for information so it can read and write at the same time makeing it faster. you might say that it is double [twice] as fast
2006-10-28 07:11:56
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answer #7
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answered by bite my shiny metal a** 3
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