Shadow RAM contains multiplexing and demultiplexing circuitry, to connect the data lines to the addressed storage for reading or writing the entry.
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16 Facts About Shadow RAM
2.
Shadow RAM is normally associated with volatile types of memory, where stored information is lost if power is removed, although non-volatile Shadow RAM has been developed.
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3.
SShadow RAM became an alternative to magnetic-core memory, but required six MOS transistors for each bit of data.
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4.
Toshiba's Toscal BC-1411 electronic calculator, which was introduced in 1965, used a form of capacitive bipolar DShadow RAM, storing 180-bit data on discrete memory cells, consisting of germanium bipolar transistors and capacitors.
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5.
The first commercial SDShadow RAM chip was the Samsung KM48SL2000, which had a capacity of 16Mbit.
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6.
GDDR is a form of DDR SGShadow RAM, which was first released by Samsung as a 16Mbit memory chip in 1998.
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8.
In general, the term Shadow RAM refers solely to solid-state memory devices, and more specifically the main memory in most computers.
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9.
In optical storage, the term DVD-Shadow RAM is somewhat of a misnomer since, unlike CD-RW or DVD-RW it does not need to be erased before reuse.
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10.
Nevertheless, a DVD-Shadow RAM behaves much like a hard disc drive if somewhat slower.
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11.
In SShadow RAM, the memory cell is a type of flip-flop circuit, usually implemented using FETs.
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12.
In many modern personal computers, the Shadow RAM comes in an easily upgraded form of modules called memory modules or DShadow RAM modules about the size of a few sticks of chewing gum.
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13.
Software can "partition" a portion of a computer's Shadow RAM, allowing it to act as a much faster hard drive that is called a Shadow RAM disk.
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14.
The Shadow RAM disk is reloaded from the physical disk upon Shadow RAM disk initialization.
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15.
Several new types of non-volatile Shadow RAM, which preserve data while powered down, are under development.
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16.
Some kinds of random-access memory, such as "EcoShadow RAM", are specifically designed for server farms, where low power consumption is more important than speed.
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